1. Education

Buildings and Related Activities in the Ancient Campus Martius

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Rome rapidly expanded beyond its city limits, conquering the rest of Italy and the Mediterranean littoral, but it deliberately kept an area under its control but beyond its limits -- until the Empire. This area was used for activities deemed unsuited for the city center; however, eventually, the densely populated area that was the historical and administrative heart of the growing empire needed the space that was the Campus Martius or Field of Mars.

Also see The Significance of the Campus Martius.

1. The Campus Martius

The Campus Martius was a field and pasture land consecrated to the main Roman war god Mars. Activities unfit for the city center were staged in this adjacent area, but by the time of the Roman Empire, the Campus Martius was needed to house important Roman structures.

2. The Theater of Pompey

Largo di Torre Argentina
CC Flickr User Bert Kaufmann
The complex of the Theater of Pompey was built in the Campus Martius at a time when permanent theaters weren't allowed in Rome proper. Since it was beyond the limits, it provided some security for the conspirators on the Ides of March.

3. Ara Pacis

Ara Pacis Augustae
CC Flickr User Alun Salt.
The Altar of Peace of Augustus or Ara Pacis Augustae commemorated the first emperor's establishment of peace in 13 B.C. It was dedicated in January 30 B.C., rediscovered in 1568, but not identified until 1869 when archaeologist Friedrich von Duhn identified the monument.

4. Pantheon

Pantheon, Rome, Italy
CC Flickr User Eustaquio Santimano
Augustus' friend Agrippa built the original Pantheon as part of a reorganization of the Campus Martius from 27 to 25 B.C. Although it had to be rebuilt, it has continued to be in use ever since. It was a temple for all the gods. Agrippa's structure appears to have been rectangular.

5. Pomoerium

The pomoerium (pomerium) was the border of the city. It defined the city limits. Ultimately, Rome's original pomoerium became obsolete. The Aurelian Walls, built in the 270s AD, functioned to encircle the city. Before that and before the Augustan redristicting of Rome, the Campus Martius stood on the other side of the pomoerium, in territory owned by Rome, but not legally the city.

6. Saepta

The Saepta was a space in the Campus Martius where the Romans voted. It was in the saepta that the comitia centuriata met to vote. The area was also called the ovile. It was divided in some way to separate the different voting groups, the tribes, curiae, and centuries. Under Augustus, his adoptive father Julius Caesar's vision, the Saepta Julia, was dedicated in 26 B.C. In the Saepta Julia entry of A Topographical Dictionary of Ancient Rome, Samuel Bell Platner says the saepta was the site of gladiatorial combats and mock sea battles.

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