On the hill of Goula or Koula (fort), as was written in older documents, with the characteristic shape, overlooking the Nestani village, stand the few remains of the castle of the byzantine settlement called Kipiana or Tsipiana. At the top of the hill there is a fortified tower and the small church of Ai Giorgis, as well as the ruins of the temple of Assumption with its byzantine murals. The castle took advantage of the hill's fortified position and monitored the entire area. Its age would have been around the same as that of Mouchlio.

The hill of Goulas is impressive with its giant and conical shape. Its slopes become abruptly narrow towards the top and are then bare, stony and become caste-like, providing a natural fortification, making the mountain look like a numb giant.