Panathenaic Games
The Panathenaic Games were held every four years in Athens in Ancient Greece since 566 BC. They continued into the 3rd century CE. These Games incorporated religious festival, ceremony (including prize-giving), athletic competitions, and cultural events hosted within a stadium.
Religious festival
The competitions for which this festival came to be known were only part of a much larger religious occasion; the Great Panathenaea itself. These ritual observances consisted of numerous sacrifices to Athena (the name-sake of the event and patron deity to the hosts of the event - Athens) as well as Poseidon and others. A sister-event to the Great Panathenaea was held every year - the Lesser Panathenaea, which was 3–4 days shorter in celebration. They were the most prestigious games for the citizens of Athens, but they were not as important as the Olympic Games or the other Panhellenic Games.
First Great Panathenaea
The first Great Panathenaea was held during the rule of Peisistratos in 566 BC, and was modelled on the Olympic Games. Peisistratos also added music and poetry competitions, which were part of the Pythian Games but not the Olympics. The games were divided into games for Athenians only, and games for Athenians and any other Greeks who wanted to participate. The games for all Greeks were essentially the same as the Olympics, with boxing, wrestling, pankration, pentathlon, and chariot racing, but chariot racing was the most prestigious of these, unlike the Olympics where the stadion (foot race) was more important.