Isle of Lemnos

Excerpt from Wikipedia's article on Jason of the Argonauts:

The isle of Lemnos is situated off the Western coast of Asia Minor (modern day Turkey). The island was inhabited by a race of women, who had killed their husbands. The women had neglected their worship of Aphrodite, and as a punishment the goddess made the women so foul in stench that their husbands couldn't bear to be near them. The men then took concubines from the Thracian mainland opposite, and the spurned women, naturally angry, killed every male inhabitant. The king, Thoas, was saved by Hypsipyle, his daughter, who put him out to sea sealed in a chest from which he was later rescued. The women of Lemnos lived for a while without men, with Hypsipyle as their queen.

The Argonauts stopped off on the isle, and the women welcomed them with open arms. Jason fathered twins with the queen, and many other Argonauts fathered children with the other women, thereby reintroducing a male population to the island (the offspring were male). Heracles pressured them to leave as he was disgusted by the antics of the Argonauts. He hadn't taken part, which is truly unusual considering the numerous affairs he had with other women. The Argonauts resumed their hunt for the Golden Fleece after spending a considerable amount of time on the island.