Boulder is a northern Colorado city, located at the base of the Rocky Mountains. Its acres of open space and hiking trails provide an excellent opportunity for a number of outdoor experiences ranging from exploring the terrain by bike and tubing on the water, to hot air balloon rides. Pearl Street Mall in Boulder's charming downtown offers walking paths to a number of galleries, restaurants, shops and breweries. The University of Colorado Boulder campus is home to the Fiske Planetarium and the Museum of Natural History. As a part of Boulder's latest public art project called "Street Wise," local artists created incredible murals — which can now be viewed on the Street Wise Mural Trail.