NPS Photo Great Falls Towpath Trek EarthCacheEnjoy a historical scavenger hunt with the Towpath Trek EarthCache. EarthCaching allows you to explore the C&O Canal and the Great Falls while protecting the Park and #RecreatingResponsibly. Use your favorite map or GPS app to find the coordinates, take in your surroundings, read the waysides, and enjoy a fun activity exploring!
NPS Photo / Karen Gray Visit the Four Locks CommunityBuilt close together, Locks 47 through 50 developed a community of people that worked, lived, and depended on the C&O Canal for transportation. Explore Four Locks and start a discussion! How are the lives of the residents of this community similar or different from yours? If you lived at Four Locks during this time, what would your everyday look like? Read more about this historical area and visit to see the Canal Towns for yourself.
NPS Photo Visit Canal and River StructuresVisitors at the C&O Canal can still see many structures that were integral to the operation of the canal. The locks, lockhouses, aqueducts, bridges, culverts, feeder dams, and waste weirs are just some of these examples. Learn about the different canal and river structures, then plan a trip to go see engineering innovation at the C&O Canal!
NPS Photo Underground Railroad: Exploring FreedomThe National Park Service preserves and protects powerful places: the physical memory of our nation's history. Locations related to the Underground Railroad are part of the Network to Freedom program. The locations in this program include National Park units and locations with a verifiable connection to the Underground Railroad. Visiting these places, virtually or in person, allows you to form your own connections to the story of the Underground Railroad in America.
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Last updated: June 2, 2026