Puertas de Tierra is a bastion-monument built around remnants of the old defensive wall at the entrance to the city of Cadiz. Built by academic architect Torcuato Cayón in the 18th century, the cover is carved in marble and was intended more as a religious altarpiece than as a military fortification.
It is one of the most significant monuments of the city and on its walls flies the purple flag of its canton.
The adjustment to the new architecture of the city, opening the two new arcs, is performed by the architect Antonio Sánchez Esteve.References:
Narikala is an ancient fortress overlooking Tbilisi, the capital of Georgia, and the Kura River. The fortress consists of two walled sections on a steep hill between the sulphur baths and the botanical gardens of Tbilisi. On the lower court there is the recently restored St Nicholas church. Newly built in 1996–1997, it replaces the original 13th-century church that was destroyed in a fire. The new church is of 'prescribed cross' type, having doors on three sides. The internal part of the church is decorated with the frescos showing scenes both from the Bible and history of Georgia.
The fortress was established in the 4th century and it was a Persian citadel. It was considerably expanded by the Umayyads in the 7th century and later, by king David the Builder (1089–1125). Most of extant fortifications date from the 16th and 17th centuries. In 1827, parts of the fortress were damaged by an earthquake and demolished.