 Walls Unit of prison system, Main Building. Huntsville, Texas, March 23, 2008
 Huntsville Unit of Texas State Penitentiary "The Walls" (established 1849) at morning. A clock above the main entrance to the prison is a symbol of time which serves as a reminder to those inside. Huntsville, Texas, December 18, 2008
 Memorial plaque of Texas Historical Commission in front of 32 feet high and 2-3 feet thick brick security wall (1942) surrounding Walls Unit of TDCJ prison system. Huntsville, Texas, June 29, 2008
 Model of Walls Unit in Prison Museum, with Main Building in the center, Infirmary to the left and Dining to the right. Huntsville, Texas, February 23, 2008
 Memorial plaque of Texas Historical Commission in front of Walls Unit of TDCJ prison system. Huntsville, Texas, December 29, 2011
 Walls Unit prison. Huntsville, Texas, February 23, 2008
 Old Administration Building of Walls Unit Prison. Huntsville, Texas, March 23, 2008
 Inmate money printed by Texas Prison System in Prison Museum. Huntsville, Texas, February 23, 2008
 "Merry Christmas to All" decoration on the 32 feet tall brick security wall surrounding "The Walls" prison (Huntsville TDCJ Unit), with a memorial historical plaque in foreground. Huntsville, Texas, December 18, 2008
 Walls Unit prison. Huntsville, Texas, December 29, 2011
 Christmas decoration on tall brick security walls of Huntsville prison "The Walls". Huntsville, Texas, December 20, 2009
 Old Administration Building of Walls Unit Prison. Huntsville, Texas, December 29, 2011
 Huntsville Unit of Texas State Penitentiary, "The Walls" prison. Huntsville, Texas, December 20, 2009
 Model of Walls Unit of Texas State Penitentiary in Prison Museum. Huntsville, Texas, December 18, 2010
 Model of old prison rodeo arena in Prison Museum. Huntsville, Texas, February 23, 2008
 Exterior of Prison Museum styled as a prison. Huntsville, Texas, December 18, 2010
 Makeshift weapons in Prison Museum. Huntsville, Texas, February 23, 2008
 Death penalty protests on exhibit in Prison Museum. Huntsville, Texas, February 23, 2008
 TDCJ Captain Joe Byrd (Peckerwood Hill) Prison Cemetery. Huntsville, Texas, February 21, 2008
 Huntsville Unit of Texas State Penitentiary "The Walls". Huntsville, Texas, October 31, 2009
 Irrigation system on agricultural field near Road 50, view from CR 443 north from Independence. Texas, June 1, 2008
 Irrigation pipe system on a field near Road 50, view from CR 443 north from Independence. Texas, June 1, 2008
 Texas Prison Rodeo exhibit in Prison Museum. Huntsville, Texas, December 18, 2010
 Entrance of Queen movie theater on Main Street in downtown Bryan. Texas, November 18, 2008
 Syringe used to administer sodium thiopental to sedate inmates during first stage of lethal injection in Prison Museum. Huntsville, Texas, February 23, 2008
 Paper items with handles made by prisoners from Christian counseling literature and used as dumbbells in Prison Museum. Huntsville, Texas, February 23, 2008
 Old Sparky electric chair used for capital punishment of several hundred death row inmates in 1924-1964 in Prison Museum. Huntsville, Texas, February 23, 2008
 Grand Menshikov Palace (Bolshoy Menshikovsky Dvorets). It is the palace s majestic Northern Facade, designed in the Petrine Baroque style by architects Giovanni Mario Fontana and Gottfried Scha"del between 1710 and 1727. The palace sits atop a natural ridge, enhancing its monumentality. A grand system of stone terraces and a double-flight staircase descends from the main entrance to the Lower Garden. Oranienbaum palace-and-park ensemble in Lomonosov (a suburb of St. Petersburg), Russia, October 13, 2025
 Entrance of main prayer room of Education City Mosque. Doha, Qatar, June 29, 2016
 First floor entrance of main prayer room of Education City Mosque. Doha, Qatar, June 28, 2016
 Irrigation pipe system on a field near Road 50, view from CR 443 north from Independence. Texas, September 21, 2008
 Water sprinkling by irrigation system over an agricaltural field near Road 50, view from CR 443 north from Independence. Texas, July 12, 2008
 Used electric chair in Prison Museum. Huntsville, Texas, December 18, 2010
 Recreation exhibit in Prison Museum. Huntsville, Texas, December 18, 2010
 Death row exhibit in Prison Museum. Huntsville, Texas, December 18, 2010
 Inmate crafts items in Prison Museum. Huntsville, Texas, December 18, 2010
 Inmate crafts exhibit in Prison Museum. Huntsville, Texas, December 18, 2010
 Old Sparky electric chair in Prison Museum. Huntsville, Texas, December 18, 2010
 Scattered, moss-covered remains of the pontoon bridge mechanism or its anchoring system. The massive granite boulders with embedded iron loops are likely anchors for a floating structure, or remnants of the pontoon system itself that was once used or stored near the Visconti Bridge. Before the stone Visconti Bridge was built in 1803, a floating bridge existed in this location. It is possible these are historical remnants from that era or parts of the hydraulic system used to manage the floating pontoons or secure boats near the dam. Pavlovsk, a suburb of Saint Petersburg, Russia, October 6, 2025
 Nafha Prison (Israeli top security prison, holds 200 Palestinians sentenced to life), view from a road to Eilat. North from Mitzpe Ramon, the Middle East, February 1, 2001
 Louvre, main entrance. Paris, July 22, 2002
 Mu"u"rivahe Street (Mu"u"rivahe ta"nav), specifically the section near the famous "Knit Market" wall. The name Mu"u"rivahe translates to "Between the Walls," referring to its historical location between the city s main defensive wall and a lower, secondary wall. This area is famous for the open-air market where local craftswomen sell traditional Estonian hand-knitted items like wool sweaters, mittens, and socks directly off the medieval stone wall. This specific spot (near Mu"u"rivahe 21) is close to the Viru Gate entrance to the Old Town and connects towards St. Catherine s Passage, another famous medieval walkway. Tallinn, Estonia, October 16, 2025
 Louvre, pyramid of main entrance. Paris, July 22, 2002
 Grave of Sam Houston at west entrance of Oakwood Cemetery showing Sam Houston carved from grey granite on his horse flanked by allegorical figures of Victory and History, view from Avenue I. Huntsville, Texas, December 18, 2008
 Sam Houston gravesite marker at west entrance of Oakwood Cemetery (erected by Pompeo Coppini 4/21/1911, shows carved Sam Houston on his horse flanked by allegorical figures of Victory and History). Huntsville, Texas, December 18, 2008
 Main entrance of Texas A and M University in Education City. Doha, Qatar, January 26, 2012
 Main entrance of Texas A and M University in Education City. Doha, Qatar, March 7, 2013
 Main entrance of Texas A and M University in Education City. Doha, Qatar, April 30, 2013
 Main entrance of Texas A and M University in Education City campus. Doha, Qatar, May 26, 2013
 Main entrance of Central Railway Station. Helsinki, Finland, July 18, 2015
 Entrance of Queen movie theater on Main Street in downtown Bryan. Texas, November 2, 2009
 Main entrance of Texas A and M University in Education City campus. Doha, Qatar, April 7, 2013
 Queen movie theater on Main Street in downtown, view from its entrance. Bryan, Texas, March 16, 2009
 Walls of Frijoles Canyon in Bandelier National Monument. New Mexico, near Los Alamos, May 26, 2008
 Old Walker County Jail. Huntsville, Texas, June 29, 2008
 Main entrance of Carnegie Mellon University in Education City. Doha, Qatar, April 30, 2013
 Main building entrance facade of Museum of Islamic Art at evening. Doha, Qatar, January 30, 2010
 Left side of the main entrance of Central Railway Station. Helsinki, Finland, July 18, 2015
 A sculpture on the wall at the main entrance of Hermitage Museum. Saint Petersburg, Russia, December 16, 2005
 Main entrance of Texas A and M University in Education City, Rayyan area, at evening. Doha, Qatar, March 3, 2013
 Main entrance to Tur Malka Russian monastery on Mount of Olives. Jerusalem, the Middle East, July 12, 2001
 Main entrance of Texas A and M University from Al Huqoul Street in Education City, Rayyan area. Doha, Qatar, March 3, 2013
 Walls of Frijoles Canyon behind Visitor Center in Bandelier National Monument. New Mexico, near Los Alamos, May 26, 2008
 Walls of Frijoles Canyon behind Visitor Center in Bandelier National Monument. New Mexico, near Los Alamos, May 26, 2008
 Town Theater at 1023 12th Street. Huntsville, Texas, June 29, 2008
 Tomb of one of descendants(?) of Sam Houston in Oakwood Cemetery. Huntsville, Texas, June 29, 2008
 Buck Foster Cemetery at Road 30 west from Huntsville. Texas, June 29, 2008
 Tombs of Buck Foster Cemetery at Road 30 west from Huntsville. Texas, June 29, 2008
 Warning "Entrance only for Blessed" in a forest at Main Monastery Road, on Valaam Island. Karelia Region, Russia, July 23, 2015
 Entrance of main hall of Isfahan Gardens (Iranian restaurant) in Souq Waqif (old market). Doha, Qatar, March 18, 2011
 Close-up view of the Karasta River cascade in Oranienbaum Park. The water tumbles over tiered, man-made steps (part of the Lower Bridge dam system), transforming into a silky, smooth sheet of water that suggests a long-exposure photograph. Moss-covered boulders at the base add a rugged, naturalistic touch, breaking the uniform flow into frothy white streams that contrast with the dark, wet stone walls. Oranienbaum palace-and-park ensemble in Lomonosov (a suburb of St. Petersburg), Russia, October 13, 2025
 Pair of statues holding spherical lamps on right side of the main entrance of Central Railway Station. Helsinki, Finland, July 18, 2015
 Herbarium, library, and botany lab building near main entrance of Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, May 29, 2009
 Stone arch at main entrance of John-Bogoslov Cheremenetskiy Monastery, south from Luga. Leningrad Region, Russia, August 24, 2013
 City prison from a window of a train. Vyborg, Russia, June 21, 2014
 Main entrance of TAMUQ (Texas A&M University at Qatar) in Education City. Doha, Qatar, November 28, 2013
 Main entrance of TAMUQ (Texas A and M University at Qatar) in Education City. Doha, Qatar, February 8, 2012
 Main entrance of TAMUQ (Texas A&M University at Qatar) in Education City. Doha, Qatar, April 14, 2011
 Kresty Prison across Neva River. Saint Petersburg, Russia, June 17, 2011
 Kresty Prison across Neva River. Saint Petersburg, Russia, June 10, 2011
 Main entrance of TAMUQ (Texas A and M University at Qatar) in Education City at evening. Doha, Qatar, February 8, 2012
 Near Main Street in downtown. Calvert, Texas, February 10, 2008
 Main Street in downtown. Calvert, Texas, February 10, 2008
 Main entrance of TAMUQ (Texas A&M University at Qatar) in Education City campus at evening. Doha, Qatar, March 6, 2011
 Main entrance of TAMUQ (Texas A and M University at Qatar) in Education City campus, at evening. Doha, Qatar, February 27, 2012
 Main entrance (from east) of Texas A and M University at Qatar (TAMUQ) in Education City campus. Doha, Qatar, February 4, 2010
 Main entrance of TAMUQ (Texas A and M University at Qatar) in Education City campus at evening. Doha, Qatar, February 28, 2010
 Main entrance (from east) of TAMUQ (Texas A&M University at Qatar) in Education City campus. Doha, Qatar, February 23, 2012
 Main entrance (from east) of Texas A and M University at Qatar (TAMUQ) in Education City campus. Doha, Qatar, March 11, 2010
 Monument of V. I. Lenin, a leader of Russian Bolshevik Revolution, at main entrance of Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, May 29, 2009
 Palms at main entrance of TAMUQ (Texas A and M University at Qatar) in Education City campus at evening. Doha, Qatar, February 28, 2010
 Main entrance (from east) of TAMUQ (Texas A&M University at Qatar) in Education City campus at evening. Doha, Qatar, March 6, 2011
 TAMUQ Main Lecture Hall 238 (Texas A and M University at Qatar), southern entrance, in Education City. Doha, Qatar, March 3, 2011
 Main entrance (from east) of TAMUQ (Texas A&M University at Qatar) in Education City campus at evening. Doha, Qatar, February 19, 2012
 Main entrance (from east) of TAMUQ (Texas A&M University at Qatar) in Education City campus at evening. Doha, Qatar, March 3, 2010
 Old Mercury car near South Main Street. Anderson, Texas, January 26, 2008
 Tourist shops on Main Street. Calvert, Texas, February 10, 2008
 Main Street in downtown at rain. Houston, Texas, January 21, 2008
 Corner of Preston and Main streets. Houston, Texas, January 21, 2008
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