National Museum of Natural History

The museum was established in 1910 in order to provide the growing Smithsonian Institution with more space for collections and research. The building, which was not fully completed until 1911, was designed by Hornblower & Marshall. The building, designed in the neoclassical architectural style, was the first constructed on the north side of the National Mall, along Constitution Avenue, as part of the 1901 McMillan Commission plan. In 2000, Kenneth E. Behring donated $80 million to the museum and in 1997 donated $20 million to modernize it