About
The former Iwabuchi Water Gate, commonly known as the “Red Water Gate,” stands quietly by the waterside in Tokyo’s Kita Ward, maintaining its dignity even as time passes. Completed in 1924 (Taisho 13), this water gate is located at the junction of the Arakawa and Sumida Rivers and was constructed as a key structure to protect the capital, Tokyo, from flooding. Its vivid red doors have long been beloved by local residents and blend seamlessly into the landscape.
The designer of this water gate was Akira Aoyama, who was also involved in the construction of the Panama Canal. Under his direction, the gate was built over eight years, and as a pioneering reinforced concrete structure, it brought together the most advanced technology of its time. With a total length of about 62 meters and five gates, each 9 meters wide, it stands imposingly like a giant fortress.
In 1982 (Showa 57), a new water gate (the Blue Water Gate) was completed downstream, ending the Red Water Gate’s role. However, due to its historical value, it was decided to preserve it. In 2024, it was designated as an Important Cultural Property of Japan, making its presence even more prominent.
Right next to the water gate spreads the “Arakawa Red Water Gate Green Space,” providing a place of relaxation for visitors. Here, the sculpture “Shooting the Moon” by sculptor Tadashi Aono is installed, creating a space that evokes “the passage of time as tangible things fade away” against the backdrop of the flowing river. There is also the “Grass Cutting Monument,” commemorating the “All Japan Grass Cutting Championship” held since 1938 (Showa 13), conveying the liveliness of the past to the present.
The upper part of the Red Water Gate is open as a bridge exclusively for pedestrians and bicycles, allowing people to cross over to Nakanojima, which is surrounded by rivers. The view of the upstream Arakawa River from this bridge shows different expressions with each season, soothing the hearts of visitors.
At night, the Red Water Gate is illuminated, and its red doors stand out against the darkness. Especially during cherry blossom season, together with the surrounding blossoms, it creates a fantastic landscape that attracts many people.
The former Iwabuchi Water Gate is not just a flood control facility, but a symbol of the region’s history and culture. Its imposing appearance serves as a bridge connecting the past and present, and it will surely continue to be loved by many people in the years to come.