"The myth of the olive tree and the goddess Athena".
According to ancient Greek mythology, the first olive tree in Athens was offered as a benefit to the people of Greece, by the goddess Athena who was the goddess of the power of purity, peace and wisdom.
The first king of Athens in 3.000 BC. was Cecropas. So he decided according to the legend to give a name to the city. So he called two gods, Poseidon ( god of the sea) and Athena (goddess of wisdom and prosperity) and they meet on the hill of the acropolis, where Parthenon is today. He asked each one of them to make a gift to the city. He that would make the best offer would be the protector of the city and give to it his name. Poseidon strucked his trident on the earth and created a well with clean water. Athena strucked her spear in the earth and the tree of olive appeared.