The California Academy of Sciences is a must-visit destination in San Francisco, especially on a rainy afternoon. Located in Golden Gate Park, this renowned institution combines a natural history museum, aquarium, planetarium, and rainforest exhibit all under one roof. Explore the exhibits, marvel at the diverse marine life, learn about the universe in the planetarium, and walk through the lush rainforest. The California Academy of Sciences offers a fascinating and educational experience for visitors of all ages.