The history of Circus Maximus stretches back to the earliest days of Rome, with its legendary founding attributed to the fifth king of Rome, Lucius Tarquinius Priscus, in the 6th century BCE. Initially, it was a simple track in the valley, with temporary wooden stands. Over centuries, it underwent significant transformations. Julius Caesar greatly expanded it in the 1st century BCE, making it a monumental structure. Emperor Augustus added an imperial box, and following a devastating fire in 64 CE during Nero's reign, it was rebuilt and enhanced. Emperor Domitian and Septimius Severus further adorned it with arches, statues, and improved seating. For over a millennium, it was the primary venue for Rome's Ludi Romani, or Roman Games. The last known chariot race was held in 549 CE, marking the end of its active use as an entertainment venue. Subsequent centuries saw it fall into disuse, its materials repurposed, and the site gradually covered by earth, until modern archaeological efforts began to uncover its profound legacy.