John Langdon was a merchant, shipbuilder, Revolutionary leader, signer of the United States Constitution, and three-term governor of New Hampshire. Map and directions, hours of operations and admission fees.

The oldest surviving wood frame house in seacoast. Built by Map and directions, hours of operations and admission fees.

A private, non-profit educational institution with historical homes of the Portsmouth area. Map and directions, admission fees, and exhibit, collection, and history information.

Contains pictures and information on American Architecture, including buildings in the Portsmouth and Seacoast New Hampshire area. Selections from the collection.

The U.S. Navy scientists used Albacore as a floating laboratory to test sonar devices, hydrophones, diving brakes and emergency escape systems. Photo and specification, location information.