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The steaming milky green-blue sulfur hot-spring pool of Beitou Thermal Valley in Taipei, ringed by green hillside
Taipei · 台北 · 25.03°N 121.56°E

Thermal Valley (Beitou): Taipei’s steaming turquoise sulfur lake

A principal source of Beitou’s hot springs, nicknamed ‘Hell Valley’—a steaming, turquoise sulfur lake where the 80–100°C water is far too hot for bathing. Reopened as a free park in 2023 with a lakeside boardwalk, it’s a short, dramatic stop that proves Taipei’s volcanic nature is never far from the MRT.

Andrewhaimerl · CC BY-SA 4.0

A principal source of Beitou’s hot springs, nicknamed ‘Hell Valley’—a steaming, turquoise sulfur lake where the 80–100°C water is far too hot for bathing. Reopened as a free park in 2023 with a lakeside boardwalk, it’s a short, dramatic stop that proves Taipei’s volcanic nature is never far from the MRT.

Updated June 20, 2026

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Quick facts資訊

Cost
Free (a public park since the 20 July 2023 reopening)
Hours
Tue–Sun 09:00–17:00, closed Mondays for maintenance; extended to 18:00 in summer (mid-May to mid-Sep)
Time needed
30–60 minutes
Getting there
MRT Xinbeitou (Xinbeitou branch off the Red Line); ~10–15 min walk uphill via Zhongshan Rd, or ~8 min from the Beitou Hot Spring Museum
Best time / for
Daytime in cooler, clearer weather when the turquoise water shines; mornings to avoid crowds and heat
Good to know
No bathing—the water is 80–100°C, for viewing only; expect a strong sulfur odor and steam.
District
Beitou (Xinbeitou)
Best for
Geothermal scenery, Beitou walking loops

Highlights亮點

  • Steaming turquoise sulfur lake—one of very few ‘green sulfur’ springs worldwide
  • Free since the 2023 Geothermal Valley Park reopening, with a lakeside boardwalk
  • A perfect short add-on to a Beitou hot-springs day

Why go

Thermal Valley, often nicknamed ‘Hell Valley,’ is the quickest way to feel Beitou’s geothermal personality. It’s a principal source of the area’s hot springs—a steaming turquoise sulfur lake whose water runs about 80–100°C, far too hot for bathing. You’re not here for a long activity; you’re here for mood: steam rising, minerals tinting the water, and a volcanic atmosphere that contrasts sharply with Taipei’s city grid.

It’s especially good on days when you want something scenic without committing to a full hike.

The historic Beitou Hot Spring Museum bathhouse in Taipei, with a red-brick lower storey and dark timber upper storey
Photo: ironypoisoning · CC BY-SA 2.0 · Wikimedia Commons

What makes the water turquoise

The distinctive green-turquoise color comes from ‘green sulfur’—an acidic mineral spring water that is one of very few of its kind anywhere in the world. The hue is most vivid in cooler, clearer weather, so daytime visits on a bright day reward you most.

Because the water is genuinely scalding, this is strictly a viewing area. Expect a strong sulfur odor and plenty of steam—part of the experience, but worth knowing before you arrive.

  • Turquoise color from rare acidic ‘green sulfur’ spring water
  • Water runs 80–100°C—viewing only, no bathing
  • Strong sulfur smell and steam are normal

The 2023 park reopening

Thermal Valley reopened as a free park on 20 July 2023, with a circular lakeside boardwalk that lets you loop the steaming lake, plus a hot-spring hand-washing fountain at the entrance. It’s open Tuesday to Sunday from 09:00 to 17:00 (extended to 18:00 in summer, mid-May to mid-September) and closed Mondays for maintenance.

Go in the morning for softer crowds and calmer photos, and if it’s humid, wipe your phone lens often—the steam fog is real.

  • Free, with a circular lakeside boardwalk (since 20 July 2023)
  • Open Tue–Sun 09:00–17:00 (to 18:00 in summer); closed Mondays
  • Hot-spring hand-washing fountain at the entrance
Steam billowing from the sulfur-stained volcanic Xiaoyoukeng fumaroles in Yangmingshan National Park, Taiwan
Photo: Jim X · CC BY-SA 4.0 · Wikimedia Commons

Pairings that make a perfect Beitou half-day

Beitou works best when you keep the rhythm gentle: one scenic stop, one soak, and one calm ‘design moment,’ then finish early. From MRT Xinbeitou it’s about a 10–15 minute walk uphill via Zhongshan Road, or roughly 8 minutes from the Beitou Hot Spring Museum, so it slots neatly into a walking loop.

  • Thermal Valley → hot-springs soak → Beitou Public Library → early dinner
  • Beitou Hot Spring Museum → Thermal Valley → café/tea → MRT back to the city

FAQ 常見問題

Quick answers to common planning questions.

What’s nearby to combine it with?
Thermal Valley sits at the top of Beitou’s walkable hot-spring strip, so it pairs naturally with the Hot Spring Museum, the Beitou Public Library, and Beitou Park on the way up — then an actual soak at a public or private bathhouse afterward. The whole loop runs gently uphill from Xinbeitou station.
How does it fit into a Beitou day?
Think of it as the scenic high point rather than the main event: a 30–60 minute viewing stop to see where Beitou’s steaming spring water comes from, slotted between the area’s museums and your soak. Go in the morning for cooler air, clearer turquoise water, and fewer crowds.
Can I bathe in Thermal Valley?
No. The water is 80–100°C—far too hot for bathing. It’s strictly a viewing area, and you should expect a strong sulfur smell and steam.
Is it free, and when is it open?
It’s free, having reopened as a public park on 20 July 2023. It’s open Tuesday to Sunday 09:00–17:00 (extended to 18:00 in summer, mid-May to mid-September) and closed Mondays for maintenance.
How do I get there?
Take the MRT to Xinbeitou (on the Xinbeitou branch off the Red Line), then walk about 10–15 minutes uphill via Zhongshan Road—or roughly 8 minutes from the Beitou Hot Spring Museum.
Why is the water that color?
The turquoise hue comes from rare acidic ‘green sulfur’ mineral spring water, one of very few such springs in the world. It looks most vivid in cooler, clearer weather.
How long should I budget?
About 30–60 minutes—enough to loop the lakeside boardwalk, take photos, and move on to a soak or café break elsewhere in Beitou.

Helpful links 連結

Official pages and references for planning details.

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Start with a simple loop: one neighborhood stroll, one iconic sight, and one night market. Taipei rewards balance.

Tip: hours, prices, and seasonal schedules can change. When something matters (like a museum ticket or a special exhibition), check the official listing before you go.