Acropolis
The acropolis has a Nymphaeum from the beginning of the 3rd century BC. A Nymphaeum was a spring and the sacred dwelling place of its female spirit (nymph). It was rimmed and used to provide water.
On the Acropolis is also the Church of Shen Mëhill (Saint Michael) (6th - 9th century AD). Measuring 8 m x 7.3 m and composed of two sections, it was discovered in 1973 at the highest point on the hill of the Acropolis. Construction materials have been taken from the Acropolis defensive walls.
The defensive fortification of the Acropolis is formed by three defensive belts of walls narrowing up to the peak of the hill. The exterior wall belt has been formed by defensive walls and seven reinforced towers.