Have you ever heard of the most expensive roof in the world? It's on the newly built Science Museum in California, USA. The entire museum cost $400 million to build, and the roof alone cost about $50 million.
The California Academy of Sciences is one of the most modern science museums in the world, featuring an planetarium, a tropical rainforest exhibit, an aquarium, and an Africa exhibit among others. Originally established in 1853, it was damaged during the 1989 San Francisco earthquake. What was originally an unfortunate event became an opportunity for the museum to completely reinvent itself during the rebuilding process.