Ibaraki · Tsukubasan OnsenTattoos: Ask ahead
Tsukubasan Onsen Tsukuba no Yu
About 90 minutes from Akihabara via the Tsukuba Express, a day spa on the slopes of Mt. Tsukuba. The open-air bath opens onto a cliff with the whole Kantō plain below—the classic post-hike or post-cable-car soak. Alkaline simple spring water around pH 9 leaves skin smooth. ¥1,100 weekdays, ¥1,300 weekends; reservable private baths too. Check the calendar for closure days.
Day-trip onsenNatural hot springDay use ¥1,100