Why you should experience Ichinohashi Park in Tokyo, Japan.
Ichinohashi Park is a revitalized waterside park where Azabujuban's river geography, neighborhood recreation and contemporary flood engineering converge at the dramatic bend of the Furukawa beneath Central Tokyo's elevated expressways.
Set along Azabu-dori near Shuto Expressway Route 2 and just steps from Azabu-juban Station, the park connects both banks of the Furukawa with an approximately 14-meter-wide pedestrian bridge that effectively turns the river crossing into part of the public landscape. A bridge fountain fed by spring water, a curtain-like water-wall fountain and a dedicated splash area give the riverfront a strong aquatic identity, while a 20-meter roller slide, climbing structures and exercise equipment spread activity onto the opposite bank. A dawn redwood serves as the principal specimen tree, joined by Somei-yoshino and weeping cherry trees along the Furukawa that soften an unusually infrastructure-heavy setting. The result is a park that makes Azabujuban's relationship with water newly visible, transforming space beneath highways and beside flood-control infrastructure into a lively neighborhood threshold between Higashiazabu, Mita and the commercial streets west of the river.
What you should know about Ichinohashi Park.
Ichinohashi Park is best known for reopening fully on June 24, 2023 after approximately 15 years of restricted public use while its grounds served as a construction base for Tokyo's Furukawa flood-control works. The park originally opened on April 1, 1953, but its strategic position beside the river later made it integral to the Furukawa Underground Regulating Reservoir, a 3.3-kilometer tunnel with an internal diameter of 7.5 meters and capacity for approximately 135,000 cubic meters of floodwater. Built roughly 30 to 40 meters underground where dense buildings and expressway structures made conventional river widening difficult, the reservoir receives excess water upstream and incorporates its discharge facility beneath Ichinohashi Park. Construction of the underground system began in fiscal 2009 and reached completion in fiscal 2017, embedding one of Central Tokyo's major flood defenses beneath an established neighborhood park.
The reconstructed public landscape above that infrastructure was developed between 2021 and June 2023, with Minato City coordinating the new park after Tokyo's river works released the construction area. Five emergency manhole toilets and a stove bench give the grounds disaster-response functions, while a mechanical underground bicycle facility accommodates approximately 400 bicycles without consuming valuable surface space beside Azabu-juban Station. Landscape construction divided the experience between an active waterside bank animated by fountains and evening illumination and a recreation-oriented bank carrying the long slide and climbing equipment. The renewed park operates simultaneously as riverfront, transportation infrastructure, emergency resource and neighborhood recreation space, demonstrating how an intensely constrained Central Tokyo site can accommodate public life directly above the engineering protecting the Furukawa basin.
How to fold Ichinohashi Park into your trip.
Ichinohashi Park works naturally as the waterside opening to an Azabujuban afternoon tracing how river engineering, Edo commerce and neighborhood belief developed together around the Furukawa, moving upstream from its first numbered bridge into the district's historic commercial and religious core.
Begin at Ichinohashi Bridge, first erected in 1699 during Furukawa improvements associated with construction of the Tokugawa shogunate's Shirokane Palace, where the river turns sharply east and the surviving bridge name preserves the numbering system imposed on this altered waterway. Continue to Azabujuban Shopping Street, where the low-lying commercial district developed beside the Furukawa and its transport routes before evolving into a dense corridor of longstanding confectioners, restaurants and neighborhood businesses connecting the river crossing with Central Azabu. Conclude at Juban Inari Shrine, created in 1950 through the merger of Suehiro Shrine and Takenaga Inari Shrine, where the district's surviving frog legend and treasure-ship traditions concentrate Azabujuban's local folklore into an intimate religious setting beyond the commercial streets. The progression moves from the engineered river crossing that organized Ichinohashi through the commerce sustained by Azabujuban's lowland geography into the beliefs carried forward by its neighborhood shrine, revealing how water, trade and folklore became inseparable parts of the district's identity.
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