The Pantheon is one of the most important and imposing Roman temples. M. Vipsanio Agrippa had it built in the 17th century BC. in honor of all the gods. In seventeen hundred and nine Pope Bonificio IV dedicated it to the Christian cult of the virgin and all the Holy Martyrs. People such as the Kings of Italy Vittorio Emanuele II and Umberto I and Queen Margherita were buried.