Seville Cathedral - 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 in 1987 by UNESCO as a World Heritage Site, along with the Alcázar palace complex and the General Archive of the Indies. After its completion in the early 16th century, the Seville Cathedral supplanted Hagia Sophia as the largest cathedral in the world, a title the Byzantine church had held for nearly a thousand years. The cathedral is also the burial site of Christopher Columbus. The Archbishop's Palace is located on the northeastern side of the cathedral.