Battistero di San Giovanni, Florence

Although the Baptistery's precise origins remain unclear, its foundations are known to date back to Roman times. The central doors are stunning works of art, depicting scenes from the Old and New Testament and they have been called The Gates of Paradise. Lorenzo Ghiberti who worked on them from 1403 to 1424 designed these ornate doors. Inside, the octagonal structure is richly decorated with Roman columns and gilded column heads. The floor's marble inlay features Islamic-style patterns and the apse is decorated with 13th-century mosaics. Coppo di Marcovaldo and Cimabue were among those involved in the cupola's decorative mosaic work.