Sumo Museum (Kokugikan)

Nestled inside the iconic Ryogoku Kokugikan arena, this intimate museum showcases sumo's thousand-year heritage through elaborate costumes, ceremonial belts, and historical photographs that capture the sport's theatrical grandeur. Visitors can peek into the wrestlers' world through displays of traditional banzuke rankings and personal memorabilia, while the building itself hums with the energy of training sessions happening just floors above. The museum offers a rare behind-the-scenes glimpse into a sport steeped in Shinto ritual and unwritten codes of honor.