We may live in one of the flattest states in the nation, but don’t let that stop you from spicing up your workout routine with some vertical challenges. Aiguille Rock Climbing Center has 10,000 square feet of rock-climbing walls up to 36 feet high. The rock-climbing gym, which has 27 top-rope walls, three climbing courses to help you improve your form and yoga classes to help you stay limber, offers enough stuff to satisfy the seasoned veteran and rookie climber alike. Afraid you’ll master the gym’s challenges too easily, and you’ll get tired of climbing the same routes? Aiguille modifies its climbing walls every few weeks to keep things interesting for regulars.