Climbers cling to carefully placed hand grips, strategizing their way up the side of the rock-like cliff. They have come to conquer the indoor mountains rising up inside Central Rock Gym in Glastonbury, CT. At each, experts guide novice climbers through introductory classes or supervise more seasoned members scaling the walls' highest heights.

Memberships unlock access to all 15 facilities, gear for the first month, and the use of exercise equipment and weights. In addition to climbing and conditioning, members can also take advantage of fitness classes such as yoga. Each gym also welcomes non-members, whether they're trying things out with a day pass or interested in events including birthday parties, summer camps, and corporate team-building breakouts.