The Cathedral of Saint Mary of the See is a Roman Catholic cathedral in Seville. It is the largest Gothic cathedral and the third-largest church in the world. It is also the largest cathedral in the world, as the two larger churches, the Basilica of the National Shrine of Our Lady of Aparecida and St Peter's Basilica, are not the seats of bishops. It was registered by UNESCO as a World Heritage Site, along with the Alcázar palace complex and the General Archive of the Indies.