The Tholi fortress was built in the last Venetian period, between 16^th and 17^th century.

The Venetian fortress is in the west of the settlement of Alagni, on the top of the Tholi hill.

It had two floors with three arched ground floors. Around it , there were walls to protect it from the enemies.

Today, on the hummock with the fabulous view some parts of the walls are preserved.