The history of the Pitiusas Islands is represented in the Archaeological Museum of Eivissa and Formentera. Its two buildings feature a complete display of the different periods which make up the past of these islands, from the prehistoric period up to the Christian conquest. One of the museum's sites is in Dalt Vila, the walled area which encloses the part of the town with the greatest number of monuments. It comprises various buildings, the most interesting ones of which are the entrance, an old chapel built by the fishermen's guild, and one of its main rooms, the one which was the Town Hall until 1838, and prior to that, the headquarters of the Universitat.