The Spot Bouldering Gym, Denver

With their indoor facility, The Spot Bouldering Gym has built its reputation upon a mountain of lofty numbers:

• 15,000 square feet of climbing space and bouldering terrain
• 17-foot free-standing boulders and walls
• 200-plus boulder problems, with new ones set weekly

Thanks to that diverse range of challenges, The Spot has cemented itself as a haven for climbers of all abilities. What's more, it models some of its routes and obstacles after some of the most-famous bouldering sites in the world, including Fontainebleau, Hueco Tanks, and Yosemite. A spacious workout area with free weights and cardio machines also resides under The Spot's roof, as does a refreshments area complete with tap beers from local breweries.