The Pantheon is a building in Rome, Italy, commissioned by Marcus Agrippa as a temple to all the gods of Ancient Rome.
In the aftermath of the Battle of Actium (31 BC), Marcus Agrippa built and dedicated the original Pantheon during his third consulship (27 BC). Located in the Campus Martius, at the time of its construction, the area of the Pantheon was on the outskirts of Rome, and the area had a rural appearance. Under the Roman Republic the Campus Martius had served as a gathering place for elections and the army. However, under Augustus and the new Principate both institutions were deemed to be unnecessary within the city.