s in Los Angeles,
Californio politician
Antonio F. Coronel's donations formed the original collection of the museum. NHM opened in
Exposition Park, Los Angeles, California, in 1913 as The Museum of History, Science, and Art. The moving force behind it was a museum association founded in 1910. Its distinctive main building with fitted marble walls and domed and colonnaded rotunda, is on
The National Register of Historic Places. Additional wings opened in 1925, 1930, 1960, and 1976. The museum split in 1961 into The Los Angeles County Museum of History and Science and the
Los Angeles County Museum of Art (LACMA). LACMA moved to a new location on
Wilshire Boulevard in 1965, and the Museum of History and Science was renamed The Los Angeles County Museum of Natural History. Eventually, the museum renamed itself again to The Natural History Museum of Los Angeles County. In 2003, the museum began a campaign to transform its exhibits and visitor experience. The museum reopened its
seismically retrofitted renovated 1913 rotunda, along with the new "Age of Mammals" exhibition in 2010. Its Dinosaur Hall opened in July 2011. A new Los Angeles history exhibition, "Becoming Los Angeles", opened in 2013. The outdoor Nature Gardens and Nature Lab, which explore L.A. wildlife, also opened in 2013. In 2024 the museum opened a new wing of the museum called the NHM Commons. The commons is and includes Gnatalie, a green-boned sauropod that's over 75 ft long; it is located on the southwest side of the museum. The commons aims to be a community space with a combination of indoor and outdoor experiences including a welcome area, a lobby with a shop, a theater, a café, and a plaza. ==Research and collections==