One of the city's best-kept secrets, this riveting museum chronicles the history of the US Navy from the American Revolution to present day. Boat buff or not, you'll be captivated by historic photographs, weaponry from across the centuries, the original fighting top of "Old Ironsides," antique navigational devices and authentic uniforms. If you can pull the kids away from the working periscopes, don't miss a self-guided tour of the USS Barry, an on-site decommissioned destroyer.