 Red Maple Swamp Trail near Fort Hill in Cape Cod. Eastham, Massachusetts, October 23, 2004
 Remains of an old settlement near Al Thugab Fort. North-west coast, Qatar, June 20, 2015
 Gulf of Finland near Solnechnoye with Fort Totleben at horizon, 15 miles north-west from Saint Petersburg. Russia, September 8, 2007
 A park of Fort Barton. Tiverton, Rhode Island, October 21, 2004
 Rose Island and Newport Bridge in fog, view from Fort Adams State Park. Newport, Rhode Island, January 22, 2005.
 Farm near Al Thugab Fort. North-west coast, Qatar, June 20, 2015
 Zubara Fort with a cannon at morning. North-west coast, Qatar, March 3, 2010
 Fort Alexander (Chumnoy). Kronstadt (part of Saint Petersburg), Russia, July 11, 2009
 Courtyard of Al-Rekayat Fort in Umm Jasim area. Northern Qatar, June 6, 2015
 House of Rashid bin Mohammed Bogarb in Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, March 6, 2015
 A swamp in a park of Fort Barton. Tiverton, Rhode Island, October 21, 2004
 Camels near Al Khoot Fort, view from Al Ashmakh Street. Doha, Qatar, April 23, 2011
 Remains of stone walls near Al Thugab Fort. North-west coast, Qatar, June 20, 2015
 Palmer Island Light and fishing fleet in New Bedford, view from a barrier of Fort Phoenix in Fairhaven. Massachusetts, October 15, 2004
 Lost Falls near Blue Trail in DeSoto State Park on Lookout Mountain. Fort Payne, Alabama, May 19, 2007
 Stairs of Al-Rekayat Fort in Umm Jasim area. Northern Qatar, May 21, 2016
 Narragansett Bay, Rose Island and Newport Bridge, view from Fort Adams State Park. Newport, Rhode Island, May 29, 2004
 Yachts in Brenton Cove, view from Fort Adams State Park in Newport. Rhode Island, October 25, 2003
 Captain Edward Penniman House near Fort Hill in Cape Cod. Orleans, Massachusetts, January 18, 2005.
 Fort Peter. Kronstadt (part of Saint Petersburg), Russia, July 11, 2009
 Houses of Nasser bin Mohamed bin Mohammed Almkaona in Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, March 6, 2015
 View of Kronstadt from Fort Constantine. Saint Petersburg, Russia, June 21, 2011
 Old graveyard of Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, December 12, 2014
 Black rhesus macaque monkey chained at the entrance of a farm near Al Thugab Fort. North-west coast, Qatar, June 20, 2015
 Zubara Fort in northern area (Shamal). Qatar, March 3, 2012
 Stone stairs of Gril Platz in Fort Constantine, Kronstadt. Saint Petersburg, Russia, June 21, 2011
 Totem-like columns of volcanic tuff across Limpia Creek, view from Road 17. Fort Davis, Texas, December 29, 2007
 Indian Lodge in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
 View of a lighthouse from Fort Constantine, Kronstadt. Saint Petersburg, Russia, June 21, 2011
 View of Nauset Harbor from Fort Hill in Cape Cod. Eastham, Massachusetts, June 20, 2004
 Purple spineless prickly pears cactus in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
 Yard inside Zubara Fort. Northern Qatar, September 20, 2014
 Dutch Island Lighthouse and West passage of Narragansett Bay, view from Fort Getty State Park at morning. Jamestown, Rhode Island, October 4, 2004
 Rose Island and Newport Bridge, view from Fort Adams State Park. Newport, Rhode Island, October 4, 2004
 Doha Fort (Al Koot Fort) near Souq Waqif (old market). Doha, Qatar, January 24, 2010
 Yard inside Zubara Fort at sunrise. Northern Qatar, September 20, 2014
 Palmer Island Light, view from a barrier of Fort Phoenix in Fairhaven. Massachusetts, May 4, 2004
 Stone ruins of Homes of Abdullah bin Nasser bin Mohammed Almkaona in Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, December 12, 2014
 Round tower of Al Thugab Fort. North-west coast, Qatar, June 20, 2015
 Reconstructed Zubara Fort on northwest coast. Qatar, February 11, 2011
 Stone remains near Al Thugab Fort. North-west coast, Qatar, June 20, 2015
 Stone ruins near Al Thugab Fort. North-west coast, Qatar, June 20, 2015
 View of Fort Alexander (Plague) from Fort Constantine, Kronstadt. Saint Petersburg, Russia, June 21, 2011
 Ruins of Fort Pavel I (Risbank), view from Fort Constantine, Kronstadt. Saint Petersburg, Russia, June 21, 2011
 Passage (sikka in Arabic) with a number of shops opening onto it on both sides, near Al Koot Fort Roundabout, Musheirib area. The puddles are from a recent rain. The shops are built up above ground to protect them against rains. Doha, Qatar, April 13, 2012
 Zubara Fort at sunrise. Northern Qatar, September 20, 2014
 Corner tower with stone stairs of Al-Rekayat Fort in Umm Jasim area. Northern Qatar, June 6, 2015
 View of Gulf of Finland and a fort built by Peter the Great in Sestroretsk, 15 miles north-west from Sankt Petersburg. Russia, October 2, 2000
 Dutch Island Lighthouse and West passage of Narragansett Bay, view from Fort Getty State Park. Jamestown, Rhode Island, March 13, 2004.
 Casemates of Fort Jackson, Plaquemine Parish. Louisiana, July 3, 2005
 Group of camels near Al Khoot Fort, view from Al Ashmakh Street. Doha, Qatar, April 23, 2011
 Acacia tree in a farm of a poet Mohammed bin Hamad bin al-Naimi (1912 - 1992) in Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, December 12, 2014
 Zubara Fort at sunrise. North-west coast, Qatar, June 20, 2015
 Remains of a water well on a farm of a poet Mohammed bin Hamad bin al-Naimi in Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, December 26, 2015
 - a trip to Mineral Wells with SMU rock climbing club 2/13/97 - downtown Fort Worth (Mineral Wells, Dallas, Texas Hill Country, February 23 - March 14, 1997)
 Rose Island and Newport Bridge, view from Fort Adams State Park. Newport, Rhode Island, December 18, 2004
 Cliff above Indian Lodge in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
 Fort of Kronshlot in Gulf of Finland. Kronstadt (part of Saint Petersburg), Russia, July 11, 2009
 Zubara Fort at sunrise. North-west coast, Qatar, March 3, 2010
 Ruins of Homes of Nasser bin Ahmad bin Isa al-Naimi in Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, December 12, 2014
 Ruins of houses of Nasser bin Mohamed bin Mohammed Almkaona in Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, March 6, 2015
 Casemates of Fort Pike. New Orleans, Louisiana, June 19, 2005
 Fort Massachusetts on Ship Island at sunset, view from a boat. Mississippi, October 29, 2006
 Doha Fort (Al Koot Fort) near Souq Waqif. Doha, Qatar, March 1, 2011
 Fort Massachusetts in Ship Island. Mississippi, October 29, 2006
 Western beach in Ship Island, with Fort Massachusetts in background. Mississippi, October 29, 2006
 Mountain laurel flowers on Blue Trail in DeSoto State Park on Lookout Mountain. Fort Payne, Alabama, May 19, 2007
 A cat near Al Koot Fort Roundabout, Musheirib area. Doha, Qatar, April 13, 2012
 Clark s Point in Fort Rodman. New Bedford, Massachusetts, April 18, 2004
 Ferry landing in Fort Adams State Park. Newport, Rhode Island, July 3, 2004
 On a hill south from Indian Lodge in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
 Fort Menshikov (Menshikovskaya Batareya). Kronstadt (part of Saint Petersburg), Russia, July 11, 2009
 Navigation sign north from Fort of Kronshlot. Kronstadt (part of Saint Petersburg), Russia, July 11, 2009
 Reconstructed Zubara Fort on northwest coast. Qatar, March 13, 2010
 Farm of a poet Mohammed bin Hamad bin al-Naimi in Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, March 6, 2015
 Fort Ein Sakharonim in Ramon Crater. The Middle East, May 9, 2002
 Columnar jointed palisade appearance of vertical lava flows along Limpia Canyon, view from Road 17. Fort Davis, Texas, December 29, 2007
 Abandoned fort on Mount Bental near a border with Syria. Golan Heights, the Middle East, April 7, 2001
 Abandoned fort on Mount Bental near a border with Syria, with melting snow on Mount Hermon on background. Golan Heights, the Middle East, April 7, 2001
 Laurel Falls near Orange Trail in DeSoto State Park on Lookout Mountain. Fort Payne, Alabama, May 19, 2007
 Yucca on a hill west from entrance in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
 Magenta tinged prickly pears cactus on northern hill in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
 Fort Pavel I (Risbank) with Lomonosov in background, view from Fort Constantine, Kronstadt. Saint Petersburg, Russia, June 21, 2011
 Zubara Fort and a cannon at sunrise. North-west coast, Qatar, June 20, 2015
 Cemetery at rain in Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, December 26, 2015
 Remains of oil drum fence of a farm of a poet Mohammed bin Hamad bin al-Naimi in Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, December 26, 2015
 Courtyard of Al-Rekayat Fort in Umm Jasim area. Northern Qatar, May 21, 2016
 - Fort Ouiatenon, "Feast of Hunters Moon" 10/11/98 (Lafayette, October 4 - 11, 1998)
 Lighthouse of Fort of Kronshlot in Gulf of Finland. Kronstadt (part of Saint Petersburg), Russia, July 11, 2009
 Gun battery "Kane" (1897) in Fort Constantine, Kronstadt. Saint Petersburg, Russia, June 21, 2011
 Roman fort (metsada) and hotels in Ein Bokek. The Middle East, December 7, 2002
 Lighthouse south-west from Fort Menshikov. Kronstadt (part of Saint Petersburg), Russia, July 11, 2009
 Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, March 6, 2015
 Zubara Fort in northern area (Shamal). Qatar, June 20, 2015
 Zubara Fort in northern area (Shamal). Qatar, June 11, 2016
 Ruins of the Roman fort Matzad Bokek near Ein Bokek. The Middle East, March 25, 2000
 Abandoned fort on Mount Bental near a border with Syria. Golan Heights, the Middle East, April 7, 2001
 Hedgehog cactus (Echinocereus viridiflorus) on northern hill in Davis Mountains State Park. Fort Davis, Texas, December 29, 2007
 Camels near Al Koot Fort behind Souq Waqif (Old Market). Doha, Qatar, April 6, 2012
 - Fort Ouiatenon, "Feast of Hunters Moon" 10/11/98 (Lafayette, October 4 - 11, 1998)
 A fort in Gulf of Finland near Solnechnoe and Sestroretsk. Near Saint Petersburg, Russia, August 1, 2001
 Metzad Bokek fort near Ein Bokek. The Middle East, February 22, 2001
 Oil house of Long Point Lighthouse and Civil War forts(?). Provincetown, Massachusetts, March 20, 2004
 Ruins of homes of Nasser bin Mohamed bin Mohammed Almkaona in Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, December 12, 2014
 Old cemetery of Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, December 12, 2014
 Ruins of the Roman fort Metzad Bokek, near Ein Bokek. The Middle East, May 20, 2000
 Metzad Bokek fort near Ein Bokek. The Middle East, February 22, 2001
 - Fort Ouiatenon, "Feast of Hunters Moon" 10/11/98 (Lafayette, October 4 - 11, 1998)
 - Fort Ouiatenon, "Feast of Hunters Moon" 10/11/98 (Lafayette, October 4 - 11, 1998)
 Fort Pike. New Orleans, Louisiana, June 19, 2005
 Crumbling brick walls of Fort Pike on Road 90, Saint Tammany Parish. Louisiana, July 4, 2006
 Frozen bay from Fort Hancock Historic District. Sandy Hook, New Jersey, February 11, 2007
 A house in north part of Fort Hancock Historic District, view from Kearney Road. Sandy Hook, New Jersey, March 11, 2007
 Stone house with narrow windows in Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, December 26, 2015
 - trip to Fort Ouiatenon 8/2/98 (Lafayette, July 12 - September 1, 1998)
 Metzad Bokek fort near Ein Bokek. The Middle East, February 22, 2001
 Abandoned fort on Mount Bental near a border with Syria. Golan Heights, the Middle East, April 7, 2001
 A yard inside Fort Rodman, view from a hole in the wall. New Bedford, Massachusetts, April 18, 2004
 Casemates for cannons of Fort Massachusetts in Ship Island. Mississippi, October 8, 2006
 Barracks around Parade Ground in Fort Hancock Historic District. Sandy Hook, New Jersey, February 11, 2007
 Metzad Tamar fort near Road 25 from Dimona to Dead Sea. The Middle East, November 29, 2001
 Inside Fort Rodman, view from a hole in the wall. New Bedford, Massachusetts, April 18, 2004
 Copper coin at archeological display near Zubara Fort. Northern Qatar, September 20, 2014
 Rapid flow of Wabash River. Heritage Trail from Lafayette to Fort Ouiatenon, Indiana, February 8, 1998.
 - Fort Ouiatenon, "Feast of Hunters Moon" 10/11/98 (Lafayette, October 4 - 11, 1998)
 View of Wabash River from a trail to Fort Ouiatenon. Indiana, November 13, 1999
 Dutch Island Lighthouse and West passage of Narragansett Bay, view from Fort Getty State Park. Jamestown, Rhode Island, March 19, 2004
 A moat of Fort Pike at low tide. Eastern New Orleans, Louisiana, November 23, 2006
 One of barracks in Fort Hancock Historic District. Sandy Hook, New Jersey, February 11, 2007
 Powder bunker in Fort Constantine, Kronstadt. Saint Petersburg, Russia, June 21, 2011
 A raccoon eaten by an eagle(?) on Heritage Trail from Lafayette to Fort Ouiatenon. Indiana, February 8, 1998.
 - trip to Fort Ouiatenon 8/2/98 (Lafayette, July 12 - September 1, 1998)
 - Fort Ouiatenon, "Feast of Hunters Moon" 10/11/98 (Lafayette, October 4 - 11, 1998)
 Fort Metzad Halukim in Negev Desert 1 mile north from Sde Boker. The Middle East, April 9, 2001
 Metzad Zafir fort near Akrabim ascent, 12 miles east from Yeroham. The Middle East, March 23, 2002
 Quick-fixed Fort Massachusetts on Ship Island at sunset. Mississippi, October 29, 2006
 A summer cottage near Fort Pike near Road 90 at Lake Pontchartrain. Eastern New Orleans, Louisiana, November 23, 2006
 A balcony of a barrack at Magruder Road in Fort Hancock Historic District. Sandy Hook, New Jersey, February 11, 2007
 - Fort Ouiatenon, "Feast of Hunters Moon" 10/11/98 (Lafayette, October 4 - 11, 1998)
 A fishing village at Lake Catherine south from Fort Pike near Road 90 at sunset. Eastern New Orleans, Louisiana, November 23, 2006
 Winter mushrooms (velvet foot, Flammulina velutipes) on Heritage Trail between Lafayette and Fort Ouiatenon, Indiana, February 21, 1998.
 - trip to Fort Ouiatenon 8/2/98 (Lafayette, July 12 - September 1, 1998)
 - Fort Ouiatenon, "Feast of Hunters Moon" 10/11/98 (Lafayette, October 4 - 11, 1998)
 Russians at Victory Day picnic. Fort Ouiatenon near Lafayette, Indiana, May 9, 1999.
 A chamber in casemates of Fort Pike. New Orleans, Louisiana, June 19, 2005
 A tour of Fort Massachusetts near cannon debris in Ship Island. Mississippi, October 8, 2006
 View of a sewage plant on Wabash River from Heritage Trail between Lafayette and Fort Ouiatenon. Indiana, February 8, 1998.
 - trip to Fort Ouiatenon 8/2/98 (Lafayette, July 12 - September 1, 1998)
 Preview of the historical performance at Fort Ouiatenon near West Lafayette IN, August 29, 1999.
 A weed at Heritage Trail near Fort Ouiatenon Indiana, August 29, 1999.
 Ruins of the Roman fort Metzad Bokek near Ein Bokek. The Middle East, March 25, 2000
 Fort Macomb near Venetian Isles. Eastern New Orleans, Louisiana, November 23, 2006
 A moat and crumbling walls of Fort Macomb near Venetian Isles. Eastern New Orleans, Louisiana, November 23, 2006
 Nike Missiles at the entrance of Fort Hancock Historic District. Sandy Hook, New Jersey, March 11, 2007
 Date palm seeds at archeological display near Zubara Fort. Northern Qatar, January 24, 2015
 Archeological display near Zubara Fort. Northern Qatar, January 24, 2015
 View of trees cut by beavers and industrial buildings on the opposite side of Wabash River from Heritage Trail to Fort Ouiatenon. Near West Lafayette, Indiana, February 8, 1998.
 - Fort Ouiatenon, "Feast of Hunters Moon" 10/11/98 (Lafayette, October 4 - 11, 1998)
 A. Sergeev in front of a new tri-color Russian flag at Victory Day picnic. Fort Ouiatenon near Lafayette, Indiana, May 9, 1999.
 Preview of the historical performance at Fort Ouiatenon near West Lafayette IN, August 29, 1999.
 Demonstration of special tools used to carry hot cannon balls from a heating furnace during a tour of Fort Massachusetts in Ship Island. Mississippi, October 8, 2006
 Remains of a fishing village near Fort Pike near Road 90 at Lake Pontchartrain. Eastern New Orleans, Louisiana, November 23, 2006
 Corn farm near Heritage Trail along Wabash River from Lafayette to Fort Ouiatenon. Indiana, February 8, 1998.
 Russian Victory Day picnic (a tri-color sheet is a new Russian flag). Fort Ouiatenon near Lafayette, Indiana, May 9, 1999.
 Dr. Petersen guiding a tour of a fort at Qal at Ruwayda archeological Site on northwest coast for Qatar Natural History Group. Qatar, February 6, 2010
 Broken porcelain at archeological display near Zubara Fort. Northern Qatar, September 20, 2014
 Part of a broken glass bottle at archeological display near Zubara Fort. Northern Qatar, September 20, 2014
 Stone balls at archeological display near Zubara Fort. Northern Qatar, September 20, 2014
 Fish bones at archeological display near Zubara Fort. Northern Qatar, September 20, 2014
 Old dates at archeological display near Zubara Fort. Northern Qatar, September 20, 2014
 Stone house of Ben Sweden in Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, December 12, 2014
 Old fence of a farm of a poet Mohammed bin Hamad bin al-Naimi in Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, December 12, 2014
 Antique glassware at archeological display near Zubara Fort. Northern Qatar, January 24, 2015
 Pottery at archeological display near Zubara Fort. Northern Qatar, January 24, 2015
 Stone mosque at the entrance of Al-Rekayat Fort in Umm Jasim area. Northern Qatar, June 6, 2015
 Zubara Fort at sunrise. Northern Qatar, June 20, 2015
 Reconstructed Zubara Fort on northwest coast. Qatar, June 20, 2015
 Rectangular tower of Al Thugab Fort. North-west coast, Qatar, June 20, 2015
 Al Thugab Fort. North-west coast, Qatar, June 20, 2015
 Rectangular shaped Al Thugab Fort. North-west coast, Qatar, June 20, 2015
 Round tower of Al Thugab Fort, on northern coast. Qatar, December 12, 2015
 View of a farm from Al Thugab Fort, on northern coast. Qatar, December 12, 2015
 Corner of Al Thugab Fort, on northern coast. Qatar, December 12, 2015
 Observation deck of Al Thugab Fort, on northern coast. Qatar, December 12, 2015
 Stone fence of a tower of Al Thugab Fort, on northern coast. Qatar, December 12, 2015
 Stone ruins near Al Thugab Fort, on northern coast. Qatar, December 12, 2015
 Round tower at the corner of Al Thugab Fort, on northern coast. Qatar, December 12, 2015
 Wide round tower at the corner of Al Thugab Fort, on northern coast. Qatar, December 12, 2015
 Corner of Al Thugab Fort with a round tower, on northern coast. Qatar, December 12, 2015
 Cemetery of Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, December 26, 2015
 Cemetery tombs at rain in Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, December 26, 2015
 Houses of Nasser bin Mohamed bin Mohammed Almkaona in Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, December 26, 2015
 Stone houses of Nasser bin Mohamed bin Mohammed Almkaona in Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, December 26, 2015
 Oil drum fence of a farm of a poet Mohammed bin Hamad bin al-Naimi in Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, December 26, 2015
 Oil drum fence of a farm in Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, December 26, 2015
 Old oil drum fence of a farm in Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, December 26, 2015
 Rusty oil drum fence of a farm of a poet Mohammed bin Hamad bin al-Naimi in Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, December 26, 2015
 Mesquite tree (Prosopis juliflora, Prosopis chilensis) in Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, December 26, 2015
 Washed out clay walls in Ain Mohamed Fort near Al Areesh Road north from Zubara. Northern Qatar, December 26, 2015
 View of Fort Rif from a rocky beach in West Kotlin Nature Reserve in Kronstadt. Saint Petersburg, Russia, September 2, 2018
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