The museum complex consists of 4 original 1850s Benicia Arsenal buildings. All of the buildings are constructed of native Californian sandstone quarried near the museum site. Museum staff will help us explore up to 3 of their sites; the museum itself, the powder magazine, and the industrial museum. The industrial museum has some stairs. To visit all 3 sites will take 2 - 2½ hours. There will be a charge for this program, payable to the Benicia Historical Museum.