11. Marquis Los Cabos in Mexico
Looking for an adults-only sanctuary where the only soundtrack is the rhythmic crashing of waves? Welcome to Marquis Los Cabos. This all-inclusive haven takes luxury to new heights with infinity pools that seem to merge with the ocean, restaurants that rival the best in Mexico, and private casitas complete with rooftop terraces and plunge pools. It’s the kind of place where time slows down and worries melt away.