National Canal Museum - Focus on the historic canals and how they developed into today's inland waterways. Located in Easton. - http://canals.org/
Independence Seaport Museum - Located on Philadelphia's Penn's Landing. Includes Admiral Dewey's 1898 flagship at the Battle of the Manila Bay, USS Olympia, and a WWII submarine, the USS Becuna. - http://www.phillyseaport.org/