The Pantheon from the Greek world Pantheon means Temple of 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, but which has been a Christian church since the 7th century. It is the best-preserved of all Roman buildings. It has been in continuous use throughout its history. Although the identity of the Pantheon's primary architect remains uncertain, it is largely assigned to Apollodorus of Damascus.