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Boulder, Colorado rests at the foothills of the Rocky Mountains and is continuously ranked as one of the best cities in the U.S. for outdoor activities and health. Boulder has many trails to hike...

Rocky Mountain National Park is great for hiking, and it offers access to pristine landscapes of the high alpine, even without long hikes.

If you're tempted to hit the open road, here's what you should know about hitchhiking across America.

The United States National Parks system is celebrating its 100th birthday in a state of disrepair, starved for funding and considering a potential sellout of the country’s finest natural features to corporate sponsorship. The...

From swimming with piranhas to searching out mystical pink dolphin, an Amazon cruise on the world's largest blackwater river is quite an adventure.

The Fisherman’s Trail weaves together ancient fishing villages in Portugal

Instead of a sunburn, think swimming polar bears and an excursion to Greenland

These former gang members give tours of their old stomping grounds. "Before, tourists wouldn't be able to walk next to us. Now we show them our country."