Osaka · Osaka City
Naniwa-no-yu Onsen
天然温泉 なにわの湯
Two subway stops from Umeda and 8 minutes from Tenjimbashisuji-rokuchome Station, a natural onsen on the 8th-floor rooftop of a building. Mildly alkaline water from 659 m below fills open-air baths looking over the Osaka skyline. Generous sauna and outdoor cool-down area, ¥900 on weekdays, open until 1 am. Combine with a stroll down Japan's longest shopping arcade, Tenjimbashisuji, and Osaka Tenmangu shrine.
- Price (adult)
- ¥900
- Hours
- 10:00–01:00 (weekends & holidays from 08:00); last entry 24:00
- Closed
- Open daily (occasional maintenance)
- Access
- 8 min walk from Tenjimbashisuji-rokuchome subway station
- Water type
- Alkaline simple
- Tattoos
- Not allowed
- Admission
- Adults (junior-high+) ¥900 weekdays / ¥1,000 weekends & holidays; elementary ¥450; infants ¥200. 6-ticket book ¥5,000. Towel ¥150, bath towel ¥500 (to buy). Bedrock bath (women only, 40-min slots) extra. Cashless payment accepted
- Baths
- Rooftop rotenburo on the 8th floor: an untreated 36 °C source tub, rock bath, three pot baths, lie-down and seated baths, plus a summer-only lukewarm bath. Indoors: artificial high-concentration carbonated bath, micro-nanobubble bath, jets and a daily-changing bath. Men: tower sauna + steam; women: far-infrared sauna + salt sauna. Generous open-air cool-down space. Two restaurants and relaxation services
- Water
- Sodium chloride-bicarbonate spring (hypotonic, alkaline) from 659 m, ~36 °C at source. Silky “beauty bath” type containing natural carbon dioxide. The source tub is unheated, straight from the well (lukewarm)
- Parking
- 600-space multi-storey car park, 3 h free with bathing
- Phone
- 06-6882-4126
- Official site
- naniwanoyu.com ↗
- Open in Google Maps
- Google Maps ↗
Essentials
Stay in this onsen town
Compare and book stays in Osaka City. Day bathing itself needs no booking.
Opens partner booking site (affiliate)
Why go
- Rooftop rotenburo over Osaka
- 2 stops from Umeda, ¥900
- Open until 1 am
Two kilometres from Osaka Station, an untreated lukewarm source bath on a rooftop
Naniwa-no-yu is a rooftop onsen on the 8th floor of a commercial building 2 km northeast of Umeda, eight minutes’ walk from Tenjimbashisuji 6-chome (Tenroku) Station. Billed as a natural hot spring within 2 km of Osaka Station, it pipes sodium chloride-bicarbonate water from 659 m down into an open-air bath under the city sky. The highlight is the source tub, fed with 36 °C water straight from the well with no heating — lukewarm enough to soak for ages even in summer, and unmistakably silky. Being on a roof, the cool-down space is generous, which sauna fans appreciate, and the line-up — men’s tower sauna, women’s salt sauna, artificial carbonated bath, three pot baths — is solid. ¥900 on weekdays and open 08:00–01:00 at weekends, it works for a morning or late-night bath from Umeda or Temma hotels, and pairs well with a stroll down Japan’s longest arcade, Tenjimbashisuji.
Tips & cautions
- Towels not included (face ¥150, bath ¥500 to buy) — bring your own.
- No tattoos.
- Bedrock bath is women-only, 40-minute slots.
- The source tub is a lukewarm 36 °C — alternate with the heated rock bath in winter.
- The 8th floor of a building housing a pachinko parlour — the entrance is easy to miss; use the dedicated lift.
- Weekends are quietest right after the 08:00 opening.
Getting there
8 min north on foot from exit 5 of Tenjimbashisuji 6-chome Station (Osaka Metro Tanimachi and Sakaisuji lines, Hankyu Senri line) — Nagara-nishi 1-7-31, Yuyu Park Building 8F, Kita-ku. ~15 min from JR Temma. ~10 min by taxi from Umeda. City bus to “Nagara-nishi”, 3 min walk. 600 parking spaces (3 h free).
Before you go
- Tattoos are explicitly not allowed, even if covered.
- Last entry is 30–60 minutes before closing.
Features
Sauna & wellness
Price
Who with
Amenities
✔ Verified operating: 2026-09 Operating status and rates cross-checked against the official site and onsen guides (full source notes in Japanese on the JA page)
Prices and hours change. Check official sources before visiting.
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