Sounion is known for its important geographical position and also because of the ruins of the ancient temple of Poseidon located in it. In recent years, the wider region due to its environmental value was declared a national park. Named is the sunset from Sounio.
Sounion (or Cavo Columns or Cobolones) is called the Cape at the southern tip of the prefecture of Attica. Its coast is rocky and steep. It rises almost vertically from the sea to a great height, forming at the foot of it a small cove, which is separated from a different eastern creek by a isthmus. Sounion is known for its significant geographical position and the ruins of the ancient temple of Poseidon that is in it.