Kangellaria is housed in a characteristic building with a long history in the port of Dapia. It may now be permanently under maintenance, however it played a role in the island's history.

Specifically, during the period before the devastation of Spetses (1770) by the Turkish-Albanian troops it served as a place where the nobles of the island who were responsible for all the decisions regarding policy, health, taxation etc. gathered.

The building's fate was tragic as it was the first to be captured on the morning of 3 April 1821 when Spetses declared its participation in the Revolution.