Tired of cruise ship pollution, frozen airplane food, or hours driving in a gas-guzzling car to get to your favorite vacation spot? Why not try a weekend getaway that not only provides relaxation but also encourages a healthy and sustainable lifestyle? Get back in touch with Mother Nature by traversing great North American national parks and resting your head in one of several lodges that can only be reached by foot (or in some cases, by bike, ski or horse).