California Academy of Sciences

The California Academy of Sciences in San Francisco is one of the largest museums of natural history in the world. Founded in 1853, it became the first society of it's kind in Western United States. Some Natural History's of the world exhibits featuring, a planetarium, African Hall (with penguins), swamp exhibit with a white alligator, T Rex and blue whale skeletons and aquarium. The roof of the building is covered with plants, doing it's part of the 'green' environment with a nice observation deck.