The Counts of Rapperswil probably built a defense tower in the early 12th century on the site of today's Greifensee Castle. The beginnings of Greifensee Castle, which was partially destroyed in May 1444 (during the so-called Old Zürich War), date back to around 1250. The castle complex consisted of a Palas on a rock , which at the time stood directly on the lake shore and was protected on the other sides by a moat and ring wall. In 1520, the Zürich Council decided to rebuild the ruins to a modest castle.
After thorough renovation, the castle is now available to the public for conferences, seminars, lectures, presentations, receptions, courses, small concerts, exhibitions, cocktails and private events (banquets, weddings). You may also rent single rooms only.
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.