Obama Onsen (Nagasaki)

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Nagasaki · Obama Onsen (Nagasaki)Tattoos: Ask ahead

Obama Onsen Wakihama Public Bath (Otasshan-yu)

A communal bath in Obama Onsen on Tachibana Bay, whose ~100°C springs release more heat than any in Japan. The single-storey wooden building from 1937 feels like a museum of Showa-era life and is a designated prefectural townscape asset. Pay at the old-style counter, then choose between the hot and very hot tubs of free-flowing chloride water. Open from 6 am; part of the Kyushu 88 Onsen trail. About an hour from Nagasaki city, on the way back from Unzen.

Day-trip onsenPublic bathhouse (sento)Day use ¥400

Nagasaki · Obama Onsen (Nagasaki)Tattoos: Ask ahead

Obama Onsen Hama-no-Yu Municipal Bath

Obama Onsen in Unzen, Nagasaki, is famed for sunsets over Tachibana Bay and for spring water near 100°C – the highest heat output of any onsen town in Japan. Hama-no-Yu is the city-run, old-fashioned public bath of this seaside spa: a classic sentō layout with an attendant's booth and two deep tubs, hot and tepid, brimming with alkaline simple spring water. No soap or shampoo is provided (sachets are sold) – there is nothing here but the water, and bath lovers cherish that purity. Admission is an astonishing ¥150 for ages 6 and up (Unzen residents ¥100), free under 6; open 6:00–22:00 (last entry 21:30), irregular closures. Park free at the nearby Yūhi-no-Hiroba lot (10 spaces). Along the shore are Japan's longest footbath, the 105 m 'Hot Foot 105', and steam cookers, and it is fun to bath-hop to the Wakihama public bath (¥200). About an hour from Isahaya Station by Shimabara Railway and Shimatetsu bus, or an hour by car from Nagasaki city. Taste Unzen's mountain baths and Obama's sea baths in a single day.

Public bathhouse (sento)Day-trip onsenDay use ¥150