The Circus Maximus, was the largest "stadium" in history and at its height held between 250,000 and 300,000 spectators.
To the people of the Roman world, a circus (Latin for circle) was a large open-air structure that was often used for chariot racetracks and doubled as a general entertainment venue. With a track dimension of 540 by 80 meters, the Circus Maximus (meaning greatest/largest) was one of the center pieces of the Roman love of entertainment for the masses. From circa 599 BCE to 549 CE this huge structure treated the people of Rome to massive events that thrilled the spectators. Chariot races involved teams of four, six, eight or twelve horses with the charioteers risking lif and limb for the fleeting fame that victory provided. While four horse chariot races between the Blue, Green, Red and White teams were the most famous and popular events, a huge variety of venues occurred in Roman circuses. Races of exotic animals, from camels to elephants were fascinating ways to keep the masses entertained. A variety of animal acts and even gladiator events often occurred at a circus while at the Circus Maximus these would be more massive and expensive. As with many Roman entertainments, attending the Circus Maximus was free of charge as an entertained and happy populous was a cornerstone of the Roman governments way to control the masses.