Crystal Cathedral, California

The Crystal Cathedral is a Protestant Christian megachurch in the city of Garden Grove, in Orange County, California. The prominent architect, Philip Johnson, designed the main sanctuary building. It was constructed using over 10,000 rectangular panes of glass, and its sanctuary seats 2,736 persons. The rectangular panes of glass are not bolted to the structure; instead they are glued to it using a silicone-based glue. This and other measures are intended to allow the building to withstand an earthquake of magnitude 8.0.