Pacific Science Center

 Is an independent, non-profit science museum designed by Minoru Yamasaki for 1962 World’s Fair in Seattle. A satellite campus in Bellevue, Washington, the Mercer Slough Environmental Center, teaches children and adults about environmental stewardship, wetland ecology and nature awareness.

 Today the museum is composed of eight buildings, including two IMAX, one of the world's largest Laser Dome theaters, a tropical butterfly house, a planetarium, and hundreds of hands-on science exhibits.

http://www.pacificsciencecenter.org/