The Pantheon (“Temple of all the gods”) is a building in Rome which was originally built as a temple to the seven deities of the seven planets in the state religion of Ancient Rome. It is the best preserved of all Roman buildings, and perhaps the best preserved building of its age in the world. It has been in continuous use throughout its history. Although the identity of the Pantheon’s primary architect remains uncertain, it is largely credited to Trajan’s architect Apollodorus of Damascus. Since the 7th century, the Pantheon has been used as a Christian church.