Double Your Fun

If a sumptuous villa with a private pool pretty much fits your definition of a luxury holiday, you clearly haven't lived — or been to the Banyan Tree Phuket. The five-star Thai resort offers 22 villas that come not with one pool each but two.

The first thing that strikes you about the DoublePool Villas, as they're called, is their jaw-dropping footprint: including grounds, they occupy between 16,460 sq. ft. (1,530 sq m) and 23,520 sq. ft. (2,185 sq m). Nestled amid each oasis is an infinity-edged pool, surrounded by a vast...