In Greek mythology, Atreus was a king of Mycenae in the Peloponnese, the son of Pelops and Hippodamia, and the father of Agamemnon and Menelaus. Collectively, his descendants are known as Atreidai or Atreidae.
Atreus and Thyestes
Entrance to the tholos known as the "Treasury of Atreus", built around 1250 BC.