Fort Abraham Lincoln State Park

Long before the fort, this bluff held a Mandan town the people called On-A-Slant, for the way the ground sloped toward the river. The Mandan were farmers and traders who built villages of dome-shaped earthlodges along the Missouri, raising corn, beans, squash, and sunflowers and exchanging goods across a wide Native trade network. Waves of epidemic disease brought by newcomers devastated the Mandan and their neighbors, and the village was eventually left. Today the Mandan are part of the MHA Nation, the Three Affiliated Tribes, with the Hidatsa and Arikara, their homeland at Fort Berthold upstream.

The park has reconstructed several earthlodges on the site so visitors can step inside and understand how these substantial, well-built homes worked, cool in summer and warm in winter, with room for families, storage, and even horses. Interpreters help connect the reconstruction to the living Mandan people and their descendants, keeping the village's story present rather than past.

In the 1870s the U.S. Army built Fort Abraham Lincoln on the bluff and the flats below to guard the railroad's push across the plains and to project force against the tribes of the region. It became the base of the 7th Cavalry under George Armstrong Custer, and its rebuilt buildings, including the Custer house, the barracks, and other structures, let visitors picture life at a frontier post.

It was from this fort that Custer led the 7th Cavalry out in the spring of 1876 on the campaign that ended in his defeat and death at the Battle of the Little Bighorn in Montana. The fort's role in that story gives it a somber weight, and the park interprets it as part of the larger, painful history of the Indian Wars on the northern plains.

Beyond its historic sites, the park is a fine outdoor destination, with trails winding through the wooded bluffs and river bottom and views over the Missouri. Deer and wild turkeys move through the trees, and the river and its cottonwoods draw birds and other wildlife, making the walks rewarding on their own.

A seasonal scenic railway carries visitors on a short ride through part of the park, adding to the sense of stepping back in time. With a campground, picnic areas, and its layered history, the park easily fills a full day and makes a strong base for exploring the capital region.

Summer is the fullest season, when the earthlodges, the fort buildings, guided tours, living-history programs, and the scenic railway are all in swing, and the wooded park is green and inviting. Long warm days make it easy to see everything.

Fall brings golden cottonwoods, cooler air, and thinner crowds, a fine time for the trails and river views. Winter is cold and quiet, with many programs paused, and spring reopens the season as the bluffs green up. Checking the schedule for tours and the railway helps plan the fullest visit.

The closest Boutel™ stays, so you can turn this stop into an overnight. Each is a place we chose through independent editorial review, never a paid placement.

Fort Abraham Lincoln State Park, near Mandan just south of Bismarck, North Dakota, is a historic park preserving both a reconstructed military fort tied to the story of Custer and a reconstructed Mandan Native American earthlodge village, along the Missouri River. The park protects On-A-Slant Village, a reconstruction of a Mandan village that stood here long before the fort, honoring the Native people who lived along the river, as well as the reconstructed frontier fort from which Lieutenant Colonel George Custer rode to his final campaign. With historic buildings, a museum, trails, and river scenery, the park tells a layered story. A rich and historic river park, it educates visitors. With its history, Fort Abraham Lincoln offers a compelling destination in North Dakota.

On-A-Slant Village, at Fort Abraham Lincoln State Park, is a reconstruction of a Mandan earthlodge village that stood on this site along the Missouri River long before the military fort, honoring the Mandan people who lived, farmed, and thrived here for generations. The reconstructed earthlodges and interpretation tell the story of the Mandan and their rich culture, offering a respectful window into the Native heritage of the river. Approaching the village with respect for this heritage is important. Understanding this Native history deepens a visit to Fort Abraham Lincoln State Park in North Dakota.

You can tour the reconstructed On-A-Slant Mandan earthlodge village, explore the reconstructed military fort and its historic buildings tied to the Custer story, visit the museum, hike the trails, and enjoy the Missouri River scenery. The Mandan village, the historic fort, the museum, and the river setting are the draws, offering a layered look at both Native and frontier history. The earthlodge village and the fort are highlights. With its history, Fort Abraham Lincoln offers a rewarding experience in North Dakota.

The mild months of late spring through early fall are the most pleasant for touring the outdoor village and fort, hiking, and enjoying the river, with guided tours and programs most active in the warm season, while the grounds can be walked in other seasons with more limited access. Because tours and hours are seasonal, checking current information before you go is wise. For the fullest experience with tours, aim for late spring through early fall at Fort Abraham Lincoln State Park in North Dakota.

Fort Abraham Lincoln State Park is near Mandan just south of Bismarck, North Dakota, along the Missouri River, within reach of Bismarck with the North Dakota Heritage Center and Gateway to Science, the Double Ditch Indian Village site, and the other attractions of the Bismarck-Mandan area. That makes Fort Abraham Lincoln State Park a compelling stop to combine with the Heritage Center and the other attractions of Bismarck on a visit to North Dakota.