Vertical Endeavors Chicago offers the best indoor climbing experience in the nation. Climbing at this facility will improve strength, balance, flexibility and self-confidence. The facility offers 18,000 square feet of climbing surface, the largest display of climbing walls molded from real rock in the world. From beginner to pro, participants of all ages can climb any time of the year in any weather. There is even a wall designed specifically for families and children that offers whimsical shaped holds for the kid in all of us. The wall abounds with squirrels, butterflies, mushrooms, snakes and other fun shapes that are hand-sculpted just for kids.