The document describes several notable churches from around the world. It provides brief descriptions of churches with unique architectural designs, such as the Chapel Notre-Dame-du-Haut de Ronchamp which features curved thick walls that let in indirect light. It also mentions churches built in unusual locations, such as the Cathedral of Our Lady of the Glory in Brazil which was inspired by the satellite Sputnik. The document highlights churches that took a long time to build or have an important historical or religious significance.