Adjacent to the harbor and marina is the Monterey State Historic Park, home to preserved adobes, historic gardens, and museums. The park includes CA State Historic Landmark #1, the Custom House, also the oldest government building in the state. This is the site where Commodore John Drake Sloat raised the American flag for the U.S., claiming over 600,000 sq miles of territory for our nation. There is also an old whaling depot (with whale bone sidewalk) and the state's first theater and brick building.