The campus
Here is a map of the campus.
People went to the campus to play and exercise in Roman times. Young men gathered there to compete in foot racing, jumping, archery, wrestling, and boxing. After exercising they would go jump in the river or they would go to the baths. Men played games with a ball before dinner. The most popular game was where you throw a ball up in the air, and see who can catch it. Women did not join in on the games.