There is nothing quite like the magic of The American Museum of Natural History. It is one of the largest museums in the world. The museum has a full-time scientific staff of 225, sponsors over 120 special field expeditions each year, and averages about five million visits annually. The one mission statement of the American Museum of Natural History is: "To discover, interpret, and disseminate—through scientific research and education—knowledge about human cultures, the natural world, and the universe."

Explore it here: http://www.amnh.org/.