The Smithsonian National Museum of Natural History is located in Washington, D.C. and is one of the most visited natural history museums in the world. It features a vast collection of over 145 million specimens, including fossils, minerals, and cultural artifacts. The museum aims to educate the public about the natural world and human history through engaging exhibits. Visitors can explore various galleries, such as the Hall of Fossils, which showcases dinosaur skeletons, and the Hope Diamond, a famous gemstone. The museum also conducts scientific research and offers educational programs for all ages, making it a valuable resource for learning about our planet.