Con Dao is a remote archipelago of 16 islands off the southeastern coast of Vietnam, historically infamous as the site of a brutal French colonial prison — the 'Devil's Island' of Indochina — and now one of the country's most pristine nature destinations. Con Dao National Park protects some of Vietnam's best-preserved coral reefs, green turtle nesting beaches, and dugong feeding grounds. The combination of moving history and spectacular nature makes Con Dao uniquely compelling.