The Guggenheim Hall is an exhibit at the American Museum of Natural History on the Upper West Side in Manhattan, New York City, that hosts one of the world's largest geology collections. It focuses on petrology, mineralization and the anthropology of gems and minerals. It is the permanent home of the Star of India, one of the world's largest and most famous star sapphires. The New York Times architectural critic, Paul Goldberger, said, "It is one of the finest museum installations that any city has seen in many years". It operates under the museum's department of Earth and Planetary Sciences.