<human>:  When did the first Olympic Games take place?
<bot>: The first Olympic Games were held in 776 BC. They were held at Olympia in Greece. The games were held every four years and were held to honor Zeus, the king of the gods. The games were held for only two days, but they had many events. The main event was the foot race, but there were also horse races, chariot races, boxing matches, and wrestling matches.