The Flatirons loom seductively in the horizon. Hundreds of miles of bike paths traverse the city. One of the nation’s largest open space systems beckons hikers, runners and dog walkers. Boulder could easily be defined by its natural beauty—but then there’s the vibe. This little city attracts an eclectic crowd. Hippies mingle with bluebloods. 20-somethings just in from California mix easily with 80-year-olds born at Boulder Community Hospital. Quirky shops and world-class restaurants line the streets. There’s something for everyone in Boulder, whether you’re visiting for the day or staying for a long weekend. If traffic cooperates, the journey north from Denver takes little more than 30 minutes. Dig into our guide and we’ll tell you all you need to know about this cosmopolitan city with a small-town feel.

—Orya Hyde-Keller