Fantastic green building

While looking for something else today, I spotted this image online:
It's the green roof of the Nanyang Technological University in Singapore. I think it's fantastic. The lawn serves as a green space, but also cools and insulates the building. It's supposedly the art building too, which I think is a pretty appropriate building to house budding artists. Inspirational.

Though, you could get some pretty mean speed if you rolled down that one side....