Located inside the national park on the west side of Christmas Island, this remote eco-chalet features floor-to-ceiling windows that look out over the vast Indian Ocean. Guests can take a guided walk along a freshwater stream through a deep green jungle to an ocean panorama with a natural infinity pool. When the tide is right, the ocean rolls into the rock pool, tumbling over the edges and bubbling back up, creating a luxurious natural spa. Sounds pretty swell.