Eastern Saitama · Culture
Metropolitan Area Outer Underground Discharge Channel
An underground hall supported by 59 immense pillars.
Completed in 2006, this 6.3-kilometre flood-control system helps protect the metropolitan region. The pressure-adjusting tank, 177 metres long and 18 metres high, is nicknamed the “underground temple” for its monumental columns. Visits are by reserved tour.
Plan your visit
- Getting there
- About 7 min by taxi from Minami-Sakurai Station (Tobu Urban Park Line)
- From Tokyo Station
- About 100–135 minTokyo Station → JR to Omiya → Tobu Urban Park Line via Kasukabe to Minami-Sakurai → about 25–30 min on foot to Ryu-Q-Kan reception
An estimate for the transport shown, including transfers and walking. Waiting times and congestion vary; check a route for your departure time.
Public transport routeAccess and booking checked
- Opening hours
- Reservations required. Tours start 10:00–16:00; the last ends at 17:00. Visits are suspended during high water, facility operation or inspections. Check official tour dates and available booking slots.
- Admission
- Underground Temple course: ¥1,200 per person, revised 15 May 2026. Other tour courses have different prices.
- Time to enjoy
- 1½ hours
- Best time
- Year-round; advance reservation required
Opening hours and events may change. Please check the latest details before visiting.
Reference photo and illustration
AI-generated illustration based on a photograph, with reinterpreted colors and details.
Kasukabe2006 06 07.JPG — Dddeco at Japanese Wikipedia · CC BY-SA 3.0
The illustration adapted from this photo is also provided under CC BY-SA 3.0.
