The Alegreza Tower is located in the upper part of the city of Bergamo, and many disagree on the name of the building, as some consider it a tower and others a castle, while some classify it as a farm, but it is certain that this historical building was owned by one of the Bergamo noble families as a castle, and the soldiers took refuge in it In times of war to hide, the building was subjected to many collapses throughout history, and only a few traces remain.