Asar Castle, locally known as Asar Kalesi or Hisar Kalesi, lies in the village of Hisarköy, in the province of Izmir in Turkey.
Asar Castle dates back to Roman-Byzantine times. It was restored during the rule of the Aydinoglu Principality and later again under Ottoman rule. This was all the historical information I was able to find. If you know more, please mail me.
The castle has an irregular groundplan alongside a ridge next to a small river. Its main gate was at the northwest.
A nice village ruin. The village is partly built in and against the castle. It is freely accessible.