Carnegie Museum of Natural History, Pittsburgh (must see)

The Carnegie Museum of Natural History, situated on Forbes Avenue in the Oakland neighborhood, was established by Andrew Carnegie, a prominent industrialist from Pittsburgh, in 1896. It is well-regarded globally for its research endeavors and is counted among the top five natural history museums in the United States.

Spanning an area of 115,000 square feet (10,700 square meters), the museum comprises 20 galleries along with spaces dedicated to research, a library, and offices. It houses approximately 22 million specimens, with around 10,000 of them displayed at any given time, while roughly 1 million are documented in online databases.

The museum gained significant recognition in 1899 with the discovery of Diplodocus carnegii fossils by its scientists. Presently, its dinosaur collection boasts the world's largest assortment of Jurassic dinosaurs, and its Dinosaurs in Their Time exhibition showcases the third largest collection of mounted dinosaurs on display in the United States.

Among its notable exhibits are the Hillman Hall of Minerals and Gems, Alcoa Foundation Hall of American Indians, Polar World: Wyckoff Hall of Arctic Life, Walton Hall of Ancient Egypt, Benedum Hall of Geology, Dinosaurs in Their Time, and the Powdermill Nature Reserve, which was established by the museum in 1956 to function as a field station for long-term studies of natural populations.