NileGuide Expert tip:
Leave your worries - and swimsuit - at the door. Those with tattoos may not be allowed entrance.
In order for a bath to be called an onsen, the water source must be a naturally occurring hot spring. The builders of Oedo onsen drilled deep to hit a natural spring beneath the surface of main-made Odaiba island, making it one of Tokyo's few genuine onsen. Admission is steep, but it allows access to simply expansive grounds, hosting an amazing variety of baths, saunas, and sometimes bizarre relaxation treatments - including a pool of tiny fish that will nibble the dead skin off your hands and feet. Upon entrance, you will be given a yukata (traditional robe) and a wristband that can be used in place of money at the theme park's many eateries, shops, and shows. Go for all-day relaxation and you might not want to leave. If that's the case, it's only an extra 1,575 yen to stay overnight!
Adults (12 and over): 2,827 yen
Children (4-11): 1,575 yen
Adults: 1,987 yen
Children - 1,575 yen
Overnight stay: 1,575 yen