Rio de Janeiro, Brazil
This vast island just off Rio de Janeiro State's Costa Verde (Green Coast) is the perfect spot to escape the heat and activity of the city and just get back to nature. The island is packed with isolated beaches, thick jungle, waterfall and natural pools, and is home to animal inhabitants including howler monkeys and even jaguars. Development is strictly limited on the island, so there are no looming tower blocks distracting the eye from the beauty of the beaches. Just don't forget the mosquito repellant.