The
Pantheon ( or ; , from
Greek Πάνθεον meaning "every god") is a building in
Rome,
Italy, on the site of an earlier building commissioned by
Marcus Agrippa during the reign of
Augustus (27 BC – 14 AD). The present building was completed by the emperor
Hadrian and probably dedicated about 126 AD. He retained Agrippa's original inscription, which has confused its date of construction.