No trip to Bath is complete without a visit to this cluster of buildings that once made up the historic Percy & Small Shipyard. Plan on at least half a day—tickets are good for two days because there's so much to see at this museum, which examines the world of shipbuilding and is the only way to tour Bath Iron Works (May to mid-Oct.) From mid-June through Columbus Day, five nature and lighthouse boat tours cruise the scenic Kennebec River—one takes in 10 lights. The 142-foot Grand Banks fishing schooner Sherman Zwicker docks here during the same period. Inside the main museum building, exhibits use ship models, paintings, photographs, and historical artifacts to tell the maritime history of the region. Hour-long tours of the shipyard show how these massive wooden ships were built. In the boat shop, you can watch boatbuilders wield their tools. A separate historic building houses a fascinating lobstering exhibit. It's worth coming here just to watch the 18-minute video on lobstering written and narrated by E. B. White. A gift shop and bookstore are on the premises, and you can grab a bite to eat in the café or bring a picnic to eat on the grounds. Kids ages five and younger get in free.