The building was built in the XIII century and stands next to the Lord’s Residence, in Piazza Garibaldi. It was originally a civilian residence owned by the Earns of Biserno, lords of the castle nearby San Vincenzo. The building became the bishop’s residence after the Castle of Monteregio was sold to Siena. In 1603 the bishop’s headquarter was finally transferred to the current Bishop’s building, next to the Cathedral.
On the façade, you can see the bishop’s crest and two Renaissance windows, and two double arched windows on the upper floor dated back to the XIX century. The building lies next to a tower, which was sold to the Free City of Massa Marittima in 1330 to become part of the Council Building.