The living 4 story Rainforests of the World at The Science Museum in Golden Gate Park looks incredible. I spent much of my childhood in San Francisco, and was in and out of the museums in Golden Gate Park. But there was nothing this cool then! My sons are going to love it here. Inside the balmy bio-dome it is as if you are in a real rainforest, surrounded by living plants and butterflies. I do hear that it is wise to purchase tickets ahead, to avoid the lines.