Circo Massimo, or Circus Maximus, is an ancient Roman chariot racing stadium and entertainment venue located in the valley between the Aventine and Palatine hills in Rome, Italy. Its history dates back to the Roman Kingdom era, and it played a significant role in the social and cultural life of ancient Rome.

Originally a simple racecourse, Circus Maximus underwent multiple expansions and renovations over the centuries. By the time of the Roman Empire, it had developed into a massive structure capable of accommodating over 150,000 spectators. The main events held at Circus Maximus were chariot races, a popular and thrilling spectacle that captivated the citizens of Rome.

The stadium featured a long, rectangular track surrounded by tiers of seating, creating a vast arena for public entertainment. The spina, a central barrier, was adorned with statues, columns, and other decorative elements. The charioteers, representing different factions (such as the Blues and the Greens), competed fiercely for victory, and the races held at Circus Maximus were known for their intensity and excitement.

Circus Maximus also hosted various other events, including processions, religious ceremonies, and public games. Despite its ancient origins, parts of the structure, including the remains of seating tiers and the outline of the racetrack, can still be seen in Rome today.

In modern times, Circus Maximus serves as a public park and gathering space, offering a peaceful environment for visitors to explore the remnants of this ancient Roman spectacle while enjoying stunning views of the cityscape.