Campus Martius
In the seventh century B.C., a storm cloud descended upon the center of an open field outside Rome's pomerium to lift King Romulus to the afterlife. This land, situated between the city and the Tiber River, became property of Tarquinius Superbus before being dedicated to Mars following his exile. Roman men assembled every spring on this plain to fight hostile tribes surrounding their growing settlement. Citizens gathered for important religious festivals while no visible changes marked the field until the fifth century B.C. A small altar to Mars stood near the center of the vast space. In 435 B.C., officials established the Villa Publica within a prepared 300-meter clearing. This area served as a gathering space where citizens congregated every five years to be counted in a census. No permanent structures existed there at that time, and no additions would be made for another two centuries.
The Punic Wars in the mid-third century B.C. shifted military expansion beyond the Italian peninsula, reducing seasonal musters on the field. Wealth flowing into Rome from foreign wars allowed victorious generals to fund construction projects promised to various deities. Generals built temples, wooden markets, and temporary entertainment venues using spoils from conquest. Starting with Sulla, building lots were sold or granted to influential Romans who encroached on common land. Insulae apartment blocks and villas began replacing open spaces. The area later hosted comitia centuriata civic meetings with weapons and city militia operations. Pompey constructed a permanent theater in 55 BC, marking the first stone theater in Rome. When the Curia Hostilia burned down in 52 BC, this theater sometimes served as a meeting place for the Senate. Julius Caesar planned for the Saepta enclosures to be placed there before his heir Augustus completed them. In 33 BC, Octavian dedicated the Porticus Octaviae, built from spoils of the Roman-Dalmatian War. The area also functioned as an assembling ground for elections throughout the Republic era.
During the early Roman Empire, the Campus Martius became officially part of the city divided into fourteen regions. Augustus utilized public building projects to consolidate political power and reshape the landscape. Marcus Agrippa transformed swampy ground into a pool and baths within parkland and temple settings known as the Laconicum Sudatorium. He also built the Porticus Argonautarum and the Pantheon, which Hadrian later rebuilt as it still stands today. In 19 BC, Agrippa completed the Aqua Virgo to supply water to these new baths and fountains. A huge Mausoleum of Augustus occupied the non-populated northern area of the field. Other buildings included the Theatre of Marcellus and the Temple for Isis constructed around Caligula's time. Nero added baths and a bridge while Domitian rebuilt burnt monuments plus a stadium that eventually became Piazza Navona. An Odeion small performance hall was also added during this period. These structures symbolized the successful completion of Augustus' efforts to stabilize the Empire through architectural grandeur.
The Ara Pacis altar was dedicated in 9 BCE on Livia's birthday after being begun in 13 BCE under Augustus. The south panel depicted a religious procession with Augustus, Agrippa, Livia, Tiberius, and other family members standing together. The north panel showed the senate in a procession alongside Augustus rather than against him. The east panel featured Tellus, the Roman Goddess of earth and Pax, indicating people were no longer starving. The west panel depicted sacrifice by either Aeneas or Numa Pompilius at the entrance location. Steps leading up to the table represented ascendence from public space to sacred one. Gods looked down from friezes onto individuals undertaking vows within the open-air structure. The Horologium Augusti obelisk served as a solar meridian instrument checking calendar congruence with the solar year. Pliny wrote about this device which Domitian later renovated when it lost accuracy due to elevation changes. Archaeological findings confirmed a travertine pavement embedded with bronze zodiac signs running north to south. This complex illustrated cosmic representation of Augustan destiny and peaceful reign across three monuments.
Barbarian invasions cut aqueducts causing rapidly dwindling populations to abandon surrounding hills and concentrate near the Campus Martius. People depended on the Tiber River for water while remaining subject to its frequent flooding. The area became the most populous part of Rome in the Middle Ages due to proximity to both river and Vatican. Pilgrims traveling to the city brought wealth supporting a thriving economy along the waterfront. The Tiber flooded entirely in December 791, submerging the entire district beneath rising waters. The Via Cassia road entered Rome through Porta del Popolo connecting the capital to Viterbo, Siena, and Florence. Malaria spread made the Via Aurelia unsafe passing through unhealthy marshes near coastal lakes like Orbetello lagoon. Muslim Saracen pirates raided coastal towns along that route kidnapping women and plundering goods. Pope Leo X built a route from Porta del Popolo to Vatican between 1513 and 1521 called Via Leonina. Several ancient Roman aqueducts were restored to operating condition to improve hygiene standards. In 1555, Pope Paul IV designated southern parts as the ghetto containing the city's Jewish population.
Rome became capital of the newly established Kingdom of Italy in 1870 reversing previous population decreases. Later construction made the area even more crowded requiring protective embankments to stop Tiber River flooding. These tall embankments effectively destroyed traditional embarkation points called Ripetta little banks alongside narrow streets leading down to water. Vernacular buildings along the river edge disappeared under new infrastructure designed for flood protection. No great building projects occurred after the Renaissance until this modern transformation period began. The Campus Martius did not change much during earlier centuries following the Middle Ages era. Population levels decreased significantly before becoming capital again in the late nineteenth century. Protecting embankments made the area much safer from threat of water damage while altering its historical character completely. This shift marked the transition from ancient field to modern Rome's capital district through engineering solutions addressing recurring floods.
Continue Browsing
Common questions
When did King Romulus ascend to the afterlife in the Campus Martius?
King Romulus ascended to the afterlife during a storm cloud event in the seventh century B.C. This land situated between Rome and the Tiber River later became property of Tarquinius Superbus before being dedicated to Mars following his exile.
What was the function of the Campus Martius during the fifth century B.C.?
In 435 B.C., officials established the Villa Publica within a prepared 300-meter clearing to serve as a gathering space for citizens counted every five years in a census. No permanent structures existed there at that time, and no additions would be made for another two centuries.
Which temple did Augustus build on the Campus Martius that still stands today?
Marcus Agrippa built the Pantheon on the Campus Martius which Hadrian later rebuilt as it still stands today. The area also included the Mausoleum of Augustus occupying the non-populated northern field and the Theatre of Marcellus constructed around Caligula's time.
Who designed the Ara Pacis altar dedicated in 9 BCE on Livia's birthday?
The Ara Pacis altar was begun in 13 BCE under Augustus and dedicated in 9 BCE on Livia's birthday. The south panel depicted a religious procession with Augustus, Agrippa, Livia, Tiberius, and other family members standing together while the north panel showed the senate in a procession alongside Augustus rather than against him.
When did Pope Paul IV designate southern parts of the Campus Martius as the ghetto?
In 1555, Pope Paul IV designated southern parts of the Campus Martius as the ghetto containing the city's Jewish population. This designation occurred after Muslim Saracen pirates raided coastal towns along the Via Aurelia and when malaria spread made the route unsafe passing through unhealthy marshes near coastal lakes like Orbetello lagoon.