The Mongolian Natural History Museum was a repository and research institution located in Ulaanbaatar, Mongolia. The museum was previously known as the Mongolian National Museum or State Central Museum.
The museum included Departments of Geology, Geography, Flora and Fauna, Paleontology, and Anthropology encompassing the natural history of Mongolia. The museum's holdings included more than 6000 specimens, 45% of which were on permanent public display.
The museum was particularly well known for its dinosaur and other paleontological exhibits, among which the most notable were a nearly complete skeleton of a late Cretaceous Tarbosaurus tyrannosaurid and broadly contemporaneous nests of Protoceratops eggs.
Wikipedia https://en.wikipedia.org/wiki/Mongolian_Natural_History_Museum
Coordinates 47°53'0.471" N 106°56'35.074" E