Cubbie Roo's Castle, built about 1150, is one of the oldest castles in Scotland and was mentioned in the Orkneyinga Saga. It takes its name from Kolbein Hruga who was said to have lived there. In King Haakon's saga, it is mentioned that after the last Norse Earl of Orkney, Earl John, was murdered in Thurso, his killers fled to Wyre. They took refuge in the castle, which was so strong that the besiegers had to thrash out a deal with them to get them out.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.