The Great Mosque of Cordoba
Year Built: 784 to 1236
Location: Cordoba, Andalusía, Spain
The Great Mosque of Cordoba is perhaps most famous for its hypostyle hall, with layers of arches in varying bands of stone that almost spring out of columns. After a very long building process under many different rulers, the mosque ultimately became a Roman Catholic Church during the Spanish Reconquista, which explains the church-like structure, which rises out of the original mosque.