A unique architectural monument, built in Byzantine style, stone-built and tiled, probably by Thomas Palaiologos, around 1400 AD, it passed into the hands of his brother Constantine.

At that time Kalavrιta had developed into a great spiritual centre. At that time, Constantine Palaiologos donated the palace to Princess Catherine Palaiologos, daughter of noblemen from Halandritsa and a relative of the imperial family. Then it became the residence of the Turkish Bey and the governor of Boevoda, and after Venetians and other Greek owners it passed to the ownership of Vasilios Tsaparas (where he was born and grew up, until he donated it to the municipality in 1977 to be used as a cultural centre).

It is noteworthy that this building survived all the disasters suffered by the city of Kalavrιta and was only affected by the ravages of time. The building is divided into three floors with an area of 530 sqm. It has a waterfall at the entrance, a battlement on the ground floor and small arched openings in the lateral turreted sections and fireplaces of Turkish morphology. The restoration of the Mansion, completed in 2000, was based on the design of the architect Engineer Mr. Dionysis Verras and since then it has been used as a cultural centre, hosting exhibitions, conferences, etc.