This strikingly modern circular villa that’s tucked into a secluded hillside on the small Cyclades island of Antiparos offers privacy, a curved infinity pool that faces out to the Aegean Sea, an outdoor home theater and easy access to quiet beaches.

Known as Cronos, the stone and concrete home was designed by the Athens-based studio Deca Architecture and was recently completed, said listing agent Despina Laou of Greece Sotheby’s International Realty.