The California Academy of Sciences is not your average “science museum”. The museum is a combination aquarium, planetarium and natural history museum that houses everything from groundbreaking research facilities to a Thursday night, adults only, cocktail hour. Located in the heart of San Francisco’s Golden Gate Park, Cal Academy is home to a penguin colony, an albino alligator, a four-story tropical rainforest and a living roof – which you can see here.
The roof’s surface is covered with 197,000 square-feet of native plant species, attached to the sloping ground by 50,000 plant trays made from tree sap and coconut husks. You can walk on it, breathe it in, and it may be one of the most spectacular additions to the museum yet.