Fresnel-shaped patterns on yellow limestone at the bottom of small caves of Nahal Darokh river 4.5 miles east from Sde Boker. The Middle East, April 9, 2001
Yellow flowers of Arabian primrose (Arnebia hispidissima) on the slope of limestone hills in Harrarah (Al Kharrarah). Southern Qatar, April 23, 2016
This view from Rataskaevu Street looks directly towards the imposing St. Nicholas Church (Niguliste kirik), creating one of the most picturesque and architecturally significant scenes in Tallinn s Old Town. The dominant feature is the massive tower of St. Nicholas Church, dedicated to the patron saint of merchants and sailors. The church, originally built in the 13th century as a fortress-church, showcases a mix of Gothic and Baroque elements. The current Baroque spire (added in the late 17th century) rises high above the street, while the lower sections reveal the heavy limestone walls typical of medieval defense structures. At the base of the tower, one can see the Small Chapel (Va"ike kabel) and the Clodt Chapel. The smaller, yellow-and-white structure with the arched entrance (left foreground) is the Chapel of St. Matthew (later St. George), adding a touch of color and intricate detail to the otherwise austere stone facade. Estonia, October 16, 2025
Northern end of Vene Street (Vene ta"nav) at the intersection with Olevima"gi and Bremeni ka"ik. The red brick building on the immediate left is located at Vene 28. It is a historic structure that was originally built in 1912 as a residential building and briefly housed the Estonian Provisional Government in 1918. It stands out with its industrial-style red brick facade contrasting with the medieval stone walls nearby. The large limestone wall with the archway on the far left is part of the city s defensive fortifications, specifically near the Bremen Tower (Bremeni torn). The archway leads into Bremen Passage (Bremeni ka"ik), a short, atmospheric walkway that connects Vene Street to Uus Street through the city wall. The tower itself, a 15th-century horseshoe-shaped defensive structure, is located just behind this wall. In the background, at the end of the street, you can see the yellow tower and facade of the Orthodox Church of St. Nicholas (Nikolai kirik) at Vene 24. Designed by architect Luigi Rusca and built between 1820-1827, this Neoclassical church serves a congregation under the Moscow Patriarchate and is known for its valuable iconostasis. It sits on the site of a much older church that served Novgorod merchants in the Middle Ages. Tallinn, Estonia, October 16, 2025