Indoor Climbing at First Ascent Block 37

First Ascent Block 37 is an indoor climbing and fitness gym at 108 N State St in the Block 37 building in the Loop of Chicago, Illinois, United States. The activity is indoor climbing with bouldering, top-rope and lead routes, plus fitness space, which makes it a weatherproof option in a city with cold winters. Difficulty ranges from easy to hard, so the gym suits first-timers and experienced climbers alike, and new climbers receive a belay check from staff before using ropes. Age limits and waiver requirements apply, and minors typically need a guardian's signature, so families should confirm the rules at faclimbing.com. Day passes cost about $28 USD for regular admission and $23 USD for students. Climbing shoes and chalk bags can be rented, and visitors bring athletic clothes and water. The operator is First Ascent Climbing and Fitness, a Chicago-area chain with several locations and trained floor staff. Safety procedures include a mandatory belay test for rope climbing, padded flooring under bouldering walls and staff who monitor the floor and respond to injuries. The gym is open year-round, so there is no seasonal restriction, and conditions are consistent regardless of rain, snow or heat. The location sits in the heart of downtown, close to State Street shopping and public transit, so it is easy to reach without a car. Quieter periods are weekday mornings and early afternoons, while evenings after work and weekends are busiest, so climbers who want open walls should avoid peak times. A typical visit lasts one to three hours, and many climbers combine bouldering with a short workout. The gym is a practical choice for travellers who want exercise in the city, and staff can guide newcomers through the grading system and route setting. Hours can change, so visitors should confirm opening times on the website.