Outside Magazine selects this pricey lodge as "notable among eco-resorts for allowing hunting of free-range organic elk" (I'm a vegetarian, so this is not appealing to me at all); $900 a person for three nights. Outside says the ranch plants 10 trees in the Amazon for every guest.

Outside says that Proximity is "a new hotel striving for top certification from the Leadership in Energy and Environmental Design code, a nationally recognized benchmark for green buildings. Solar panels heat 60% of the hotel's water, and its elevator captures electricity produced by the brakes as the car descends; doubles from $199."

According to Outside, Orchard was built from concrete made from fly ash, a byproduct of coal power plants, with key cards that turn off the heat when you leave the room; doubles from $190.

Outside Magazine says that the Napa Valley Hotel and Spa is the only LEED gold-certified hotel in the U.S., where a copy of Al Gore's eco-manifest An Inconvenient Truth is kept in every room along with the Holy Bible and a Buddhist bible; doubles from $160.