The palace was built in the 17th century and is one of the most beautiful baroque-manieristic palaces in Koper.
After the First World War it became the seat of the City Museum of History and Art, today Koper Regional Museum, which holds valuable cultural heritage of Northern Istria, from the prehistoric period onwards, with an emphasis on Venetian cultural circle. The palace bears two names because a member of the Belgramoni family one night lost it in a cards game and the palace became property of the family Tacco.