The University of Colorado Museum of Natural History is a museum of natural history in Boulder, Colorado. With more than four million artifacts and specimens in the areas of anthropology, botany, entomology, paleontology and zoology, the museum houses one of the most extensive and respected natural history collections in the Rocky Mountain and Plains regions, making it one of the top university natural science museums in the country. In 2003, the University of Colorado Museum received accreditation by the American Alliance of Museums, an honor achieved by only 18 of 500 university natural history museums and only 5% of all 17,500 US museums.