Salacgrīva was a medieval castle built in 1226 by the bishopric of Riga. The three-tower castle served as an outpost to control access to the port of Salaca. It was captured in 1391, burned in 1564 and again drastically damaged in 1575 by Russian and Tartar warriors who fought side by side with the troops of Duke Magnus of Holstein.
In 1581, Salacgrīva castle was attacked by the Swedish troops of Commander Thomas von Enden, and during the Second Northern War it was almost destroyed. Between 1704 and 1704, it was finally demolished, and since then there have been no restoration works carried out there.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.