Going Green in America's Cities

Where to stay: The intoxicatingly chic Hotel Valley Ho (866/882-4484; hotelvalleyho.com) recently installed a plate heat exchanger, which greatly reduces electricity.

Where to eat: Sustainability, not sand, will soon represent Phoenix if eateries like the Sheraton Wild Horse Pass Resort's restaurant, Kai (the Pima word for seed), (602/385-5726; wildhorsepassresort.com) continue to use local, regional ingredients and emphasize their Native American roots.

How to travel: To get around with style and environmental responsibility, try EnviroCar (888/334-4034; envirocarphx.com), which offers chauffeured transportation with a hybrid fleet.

Green activity: In a place known for its spa, guests of The Boulders (866/397-6520; theboulders.com) can take a walking tour led by a local geologist amid the 12-million-year-old rock formations that surround the resort.