Designed by Renzo Piano, the building took ten years and $500 million dollars to complete....it houses an aquarium, planetarium, natural history museum (my least favorite part - how many dead stuffed animals does it take to be too many??), and a four-story rain forest. You can walk onto a deck next to the green roof, which is an undulating meadow of California native plants covering two and a half acres in the sky.
The green roof's pop-up windows are slightly martian-like
I've never seen such a beautifully contoured green roof before, let alone one with portholes...
Here's how the green roof looks from the inside
Ever wonder how they keep aquarium glass clean?
The rainforest is an extravaganza of tropical foliage and free-flying butterflies