One of the main tourism attractions of the Bismarck area is Fort Abraham Lincoln State Park, south of neighboring Mandan. It contains the partial reconstruction of Fort Abraham Lincoln, the headquarters of the 7th Cavalry and last command of General George Armstrong Custer before the Battle of the Little Bighorn (also known as the Battle of the Greasy Grass). The park includes On-a-Slant Village, a partially rebuilt earth lodge village once occupied by people of the historic Mandan tribe. Guided tours of both sites are offered in the summertime. There are also a museum on park history, nature trails, and a campground.