In the outskirts of Mtskheta are the ruins of Armaztsikhe fortress (3rd century BC). Armaztsikhe was the residence of the Kings of Iberia. This is one of the oldest cities of the Antique Era, which is not fully explored yet. It is also called like Georgian Acropolis. The Greek historian Dio Cassius mentioned this place in his book “The history of Rome”. He wrote that in 65 years BC, Roman Senator Gnaeus Pompeius invaded Iberia and reached this Acropolis too.
Archaeological investigations began in 1943 and three main cultures were identified: the oldest finds were dated to the 1st century BC to 2nd century AD, the central findings on the 3rd-5th centuries, and the latest to the 6th century. Consequently Armaztsikhe was destroyed by the Arabs in the 8th century. There are a royal sarcophagus, vestiges of the ramparts, a fortified tower and supporting pillars, foundation walls of the palace, a bath house, a wine cellar, a pre-Christian temple and a canal system.
The Gravensteen is a castle in Ghent originating from the Middle Ages. The name means 'castle of the counts' in Dutch. Arnulf I (918–965), Count of Flanders, was the first to fortify this place, building a medieval bastion on this high sand dune, naturally protected by the river Leie and its marshy banks. This bastion consisted of a central wooden building and several surrounding buildings, also in wood.
In the early 11th century, the wooden building was replaced by a stone residence, consisting of three large halls that made up three storeys, connected by a stone stairwell. The monumental stone staircase, the light openings, the fireplaces built into the walls and the latrines were signs of considerable luxury and comfort in those days. There was probably also a tower.