Hopewell Culture National Historical Park (formerly Mound City Group National Monument) preserves the 2000-year old remains of 5 archeological sites near Chillicothe, Ohio. The Mound City Group unit features 23 mounds within an earthwork enclosure. This site is also the location of the park''s visitor center and administrative offices. The visitor center with its museum are wheelchair accessible, as is the 1 mile nature trail. Access to the mounds are by relatively level mown grass grounds.

The Hopewell Mound Group unit preserves the remains of the "type" site for the Hopewell culture. This unit features a 1 mile paved trail that is part of regional rail-trail system.

The Seip Earthworks unit preserves the second largest Hopewell culture mound (the largest was at Hopewell Mound Group, but has been largely leveled). Access to this site is through the Seip State Memorial with relatively level mown grass trails to the mound and down to Paint Creek.

Hopeton Earthworks and High Bank Works units are closed to the public.