B-Pump Ogikubo

This Ogikubo climbing gym has daily lessons for beginners who'd like to learn more about bouldering or rope climbing, and also features training sessions for first-timers and children. It's also a great place to find new climbing buddies - no reservations are required, and all classes are free of charge (except for registration and entrance fees). The same company also operates a gym in Akihabara.