Fingal’s Cave, Inner Hebrides, Scotland. "Fingal's Cave is a sea cave on the uninhabited island of Staffa, in the Inner Hebrides of Scotland, part of a National Nature Reserve owned by the National Trust for Scotland" via Wikipedia.
My most favorite spot (so far) in the world. Spent 7 glorious days next to this pool. The Westin Maui Resort & Spa, Hawaii - This is like the ultimate Whitney vacation spot! Hawaii AND a water slide? Can I be a kid again at