I took dozens of pictures at the Smithsonian National Museums (Air and Space, and Natural History) this summer when my parents were visiting. I enjoyed it so much that I nearly declared taking photographs in science museums an official hobby. I love taking my time at museums. Having a camera in my hand establishes that and gives me an excuse to linger and wander around. I came across this article about photographing the science museum (via Boing Boing) that gave me a lot of validation. I promise to put more pictures up from previous and (hopefully) future trips. Here's a link to the set.