The Österbybruk was established by the King Gustav Vasa in the 16th century. Int 1643 it was acquired by Louis de Geer and in his time Österbybruk became the center of weapon manufacturing in Sweden. Later it was owned by Grill and Tamm families.
The manor house of Österbybruk was built in 1763-1780 by the design of Elias Kessler and Erik Palmstedt. There is also a Calvinist church with a mirror hall built in 1735. The industrial milieu with labour cottages, workshops and magazines surrounding the manor is well-preserved.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.