Why It’s Unique: Located north of Acapulco on Mexico’s Pacific Coast, eco-friendly Playa Viva is scheduled to open in November 2008. Three treehouse casitas will be completely built with sustainable materials; each will have a bedroom and full porch for dining and lounging, and the master development plan calls for a beach club, lounge, and 40-room boutique hotel, plus solar-generated electricity and hot water.
Access: Series of stairs, ramps, and bridges.
What to Do: Tour the resort’s 200 acres, 80 percent of which is a private nature preserve.
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