The ancient Greek Olympics began over 2,700 years ago in Olympia, Greece and were held every four years in honor of Zeus. Events included wrestling, boxing, jumping, throwing, and chariot racing. Only men competed, though unmarried women had their own Heraia festival. Around 50,000 spectators would attend the multi-day festival, which featured both athletic competitions and other celebrations. The Olympics helped unite the Greek city-states and were an important part of ancient Greek culture and religion.