If you are going to be in the California and San Fransisco Area check out this amazing museum and science center. It's a great example of sustainable design and green roofs, and it's been in design and in the making for years and took over $500 million to build.Below is their website and address!
55 Music Concourse Dr., Golden Gate Park
San Francisco, CA 94118
(415) 379-8000
http://www.calacademy.org/