Peaceful Valley Ranch

Peaceful Valley Ranch, about three miles from the town of Medora, North Dakota, dates from 1885, when Benjamin Lamb, "a 22-year-old white male rancher from Ohio" bought the land and built its first buildings. The ranch includes Late Victorian architecture and was listed on the National Register of Historic Places in 1994. The listing included three contributing buildings.

It overlooks the Little Missouri River in what is now the south unit of Theodore Roosevelt National Park, in "the Little Missouri badlands of western North Dakota."

The listing includes a barn that was built by George Burgess and J.C. Rasmussen in 1905.