One of the greater-Boston-area’s largest rock climbing facilities, Brooklyn Boulder Somerville offers an array of beginner and advanced classes and climbs that are sure to please anyone with an adventurous side. The facility offers Bouldering, climbing without a rope or harness, Top Roping, climbing with a rope and harness, and Lead Climbing, which is an advanced combination of both. Yoga, fitness classes and saunas are also available for guests. Beginner seminars are required for first-time climbers and classes are also offered for those looking to further their skills. Admission is $22 for adults and $18 for students for one day (you can come back and forth as you like!). Renting equipment costs extra (between $2 and $11) and memberships are available.