The castle of Aymavilles is certainly the most characteristic and recognizable element of the Aymavilles for its position and architecture characterized by the four cylindrical towers crowned by 'murder holes' that enclose a central body with a square base.
The building, the origins of which date back to 12th century, was repeatedly reconfigured, changed its use from defensive to that of elegant lordly residence inside a great park.
The first record of the fiefdom and the castle date back to 1278, when it was simple a four-sided tower surrounded by a wall, according to the widespread type of the oldest Valdostan castles. Today, the large surrounding walls of the 13th century tower still exist, characterized by being strongly banked, along with a spinal wall divides it into sections at full height.
In 1357, Aimone de Challant became subject to fiefdom three years before the fiefdom of Aymavilles by Amedeo VI of Savoy, allowing it to operate as the defensive reinforcement of the facility, probably considered too vulnerable particularly the level approach on the surrounding land. The four corner towers were thus made: these have circular bases and are unequal in diameter, height and type of crenellations; 'murder holes' and arrow loops were also built, in addition to a double wall with a moat and draw bridge.
At the beginning of 18th century, the external fortifications were demolished and the land was arranged in terraces and gardens, changing the designated use of the building.
After many changes in ownership, the castle was purchased in 1970 by the Regional Administration, which has undertaken major restructuring in these past years.
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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.