Local Secret · Hongo / Suidobashi

Hongo Reservoir Park 本郷給水所公苑

Hidden rose garden and Japanese garden built on top of a working water reservoir, next to the Tokyo Waterworks Historical Museum.

Hours7:00-19:00 (April-September); 9:00-17:00 (October-March)

ClosedDecember 28-January 4

PriceFree

Getting thereSuidobashi Station (JR / Toei Mita Line), 7 min; Hongo-sanchome Station (Marunouchi / Oedo lines), 7 min; Ochanomizu Station, 7 min

Time needed30 minutes

Best timeMid May and mid October for roses

Address2-7 Hongo, Bunkyo-ku, Tokyo

Websitecity.bunkyo.lg.jp/bosai/midori/kuritukou

About

Hongo Reservoir Park is a small Bunkyo ward garden laid out on the roof of a water-supply reservoir, so it sits above the surrounding streets. The western half is a formal rose garden with about 300 bushes of some 53 varieties around raised beds, at their best in mid May and mid October, while the rest of the park is a quiet landscaped garden. Below is the free Tokyo Waterworks Historical Museum, which covers Edo's aqueducts.

Highlights

About 300 roses of 53 varieties
Garden on the roof of a reservoir
Raised garden above street level
Next to the free Tokyo Waterworks Historical Museum

Tips

Visit in mid May or mid October for the roses
Easy stop between Tokyo Dome and Ochanomizu

Open in Google Maps · Info checked 2026-10-10

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Hongo Reservoir Park 本郷給水所公苑

About

Highlights

Tips

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