The North Dakota Heritage Center & State Museum, located on the North Dakota State Capitol grounds in Bismarck, is the state of North Dakota's official history museum. The original building, which was opened in 1981,[1] is operated by the State Historical Society of North Dakota and features permanent and temporary exhibits. In June 2008, the museum, which has been called a "Smithsonian on the plains",[2] became home to a rare mummified Edmontosaurus with fossilized skin.[3]
Expansion[4] of the North Dakota Heritage Center & State Museum finished with a grand opening on November 2, 2014, coinciding with the 125th anniversary of statehood.[5] The expansion added 127,000 square feet of collections storage, labs, and office space, doubling the total size of the museum.