MUTSEU includes the Archaeological Site, one of the most interesting areas of urban archeology of the island brought to light by a campaign of excavations and research started in the 90s of last century, the church of Santa Eulalia and the Treasury Museum and the Archive of Saint Eulalia.
The history of the Museum of Santa Eulalia Treasury and the Archaeological site, found underneath the church and the adjacent areas, started in October 1989. A colony of termites was destroying the wooden furniture of the sacristy and damaging liturgical items stored in them. To remedy this situation and to provide adequate accommodation to the precious heritage of silverware, paintings, tapestries and wooden works of the parish church, it was decided to restore the premises of the sacristy as a museum.
During the work of removing the floor of the sacristy, in January 1990, clear signs of existing buildings emerged, attracting the attention of archaeologists.
Since that time, the restoration of the premises of the sacristy, to be used as Museum, and the archaeological excavation, first under the sacristy area and then under all that the Church of St. Eulalia, proceeded together, originating what it is now the main monumental site in the Marina district.