The Steve Jobs Theater, formerly known as the Auditorium is a state-of-the-art facility located in Apple Park. The only underground theater on campus, its entrance is flanked by a cylindrical lobby that adds style and elegance to the facility. The theater's lobby area showcases a clear 360 degree from its massive glass-panelled structure. Its carbon-fiber material roof is considered to be one of the largest in the world. Mainly used for product launches, this was where the iPhone X was unveiled to the world.