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The greenest parks in America

pretty mountain vista with winding road and green school bus

Photo: Dawn Endico/Flickr

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Denali National Park

Denali National Park in Alaska is one of the most beautiful parks in the country. You can't go wrong with 6 million acres of wilderness filled with grizzly bears, wolves and deer. The park uses green shuttle buses to cart tourists around, and it's in the process of building a new wildlife center, which will follow green building codes.