Visitors are mesmerized by their images reflected in a concave mirror at the Exploratorium’s new $300 million home during a pre-opening tour led by
Visitors are mesmerized by their images reflected in a concave mirror at the Exploratorium's new $300 million home during a pre-opening tour led by staff scientist Paul Doherty, far left, on March 25, 2013. The facility in Pier 15 on San Francisco's waterfront opens April 17. (Karl Mondon/Staff)