The Vallejo Naval and Historical Museum preserves and exhibits the diverse and exciting history of the City of Vallejo and the former U.S. Naval Shipyard at Mare Island. The Museum is located in Vallejo’s historic Old City Hall and features five galleries devoted to community and U.S. Navy history. We have a working submarine periscope that gives an excellent view of the City and Mare Island! Over 25,000 square feet of exhibits maintained in five galleries with selections from the permanent collections of the Museum, local private collections, traveling exhibitions, and borrowed artifacts from the extensive collection at Mare Island