Best getaway: Hotelito Desconocido (from $410; mexicoboutiquehotels.com)

Why it's green: This five-star resort uses practically no electricity—solar panels heat showers and run ceiling fans, all produce is grown in the hotel's organic garden, and there's a candles-only policy for evening lighting.

Why it's great: Surrounded by Pacific surf, Desconocido's rustic tone and remote location make you feel as if you're lost in paradise. Tip: Book a master suite. The perks include a patio with water views, an outdoor shower, and your own rowboat—perfect for a romantic cruise along the water.