Danae was a legendary princess of Argos. Her father, Acrisius, who had been warned by an oracle that her son would one day kill him, had decided to keep her locked her in a bronze tower away from any male company.
Zeus, who loved Danae, turned himself into a shower of gold and came to the despondent princess through the roof. The shower of gold poured down into her lap; as a result she had a son. When Acrisius discovered Perseus, he locked both mother and son in a chest, and set it adrift on the sea. Eventually Danae and Perseus were rescued.