The geographical center of the landmass of the United States moved on Aug. 21, 1959, the day that Hawaii became the 50th state, and on Aug. 21, 2007, the Belle Fourche Chamber of Commerce and the Center of the Nation Planning Committee marked the spot by dedicating a new monument next to the Tri-State Museum and Visitor Center.

Made from South Dakota granite, the 21-by-40 foot compass rose marks Belle Fourche as the geographic center of the nation, with a 12-inch bronze marker from the National Geodetic Survey verifying the location.

Hours:
Memorial Day - Labor Day
Monday - Saturday
9:00 a.m. - 5:00 p.m.
Sunday
12:00 - 4:00 p.m.

September
Monday - Saturday
9:00 a.m. - 5:00 p.m.
Closed Sunday

October - April
Monday - Friday
10:00 a.m. - 4:00 p.m.
Closed Weekends