Why you should experience Nerima JΕshi Park in Tokyo, Japan.
Nerima JΕshi Park is a layered riverside park where Mukoyama's medieval inheritance, Shakujii River landscape and the memory of Toshimaen are being assembled into a new public landscape on unusually storied ground.
Set along Toshimaen-dori near Mejiro-dori and just steps from Toshimaen Station, the park follows the Shakujii River through entrance, riverside and flower zones that opened as the first completed portion of a much larger landscape still taking shape. Seasonal plantings bring cherry blossoms, hydrangeas, cosmos and maples into the route, while broad paths and inclusive play equipment establish a deliberately accessible recreational character. The river provides the strongest organizing line, carrying the landscape between open lawns and planted edges while preserving a geographical feature that predates both the amusement park and the surrounding residential district. The result is a park worth experiencing during its evolution, with new public space revealing successive layers of Mukoyama without erasing the watercourse that helped shape them.
What you should know about Nerima JΕshi Park.
Nerima JΕshi Park is best known for transforming the former Toshimaen amusement park into a metropolitan park whose name reaches back to Nerima Castle, a stronghold built by the Toshima clan as its power expanded along the Shakujii River during the fourteenth century. The Toshima controlled the surrounding territory until 1477, when Εta DΕkan defeated the clan during the conflict associated with Nagao Kageharu's rebellion, ending the castle's political importance. Centuries later, the castle grounds became the historical nucleus for Toshimaen, which opened in 1926 and eventually occupied 22 hectares of the 26.6-hectare area designated for Nerima JΕshi Park in Tokyo's city plan on December 21, 1957. Toshimaen operated for 94 years before closing on August 31, 2020, allowing a park envisioned more than six decades earlier to move toward construction on the former amusement grounds.
Tokyo identified 22 hectares as a priority development area in 2011, then announced its intention to advance the project in January 2020 and reached an agreement with Nerima City, Seibu Railway and other parties that June. The Tokyo Metropolitan Park Council considered the development plan from June 2020, released an interim proposal in January 2021 and completed its recommendations that April before Tokyo approved the plan and secured authorization for the urban park project in May. Construction began in May 2022, and the first section opened on May 1, 2023 with the Entrance Exchange Zone, Riverside Strolling Zone and Flower Interaction Zone. Approximately 32,218 square meters were open by April 2024, establishing the first public chapter of a project intended to combine greenery, water, recreation and disaster resilience across the former Toshimaen site.
How to fold Nerima JΕshi Park into your trip.
Nerima JΕshi Park works as the opening to an afternoon devoted to Mukoyama's changing landscapes, moving from the former castle and amusement grounds into a surviving residential garden before concluding with the immersive entertainment complex that now occupies another portion of Toshimaen's former territory.
Begin at Koyama Garden, opened publicly in 1980 on grounds associated with former railway minister Tsubasa Egi, where a pond-centered Japanese garden preserves the greenery of Jonan Garden City, the residential enclave developed after the Great Kanto Earthquake and accelerated by Toshimaen Station's 1927 opening. Continue through Mukoyama Garden City, where a cooperative formed by more than 40 members in 1924 developed residential plots south of the former castle, creating the quiet, greenery-conscious neighborhood that still provides a striking transition between the historical park and contemporary entertainment district. Conclude at Warner Bros. Studio Tour Tokyo, opened in 2023 on part of the former Toshimaen property as the world's largest indoor Harry Potter attraction, where sets, costumes, props and production techniques turn the site's century-long association with recreation into an ambitious new chapter. The progression moves from medieval ground reclaimed for public greenery through Mukoyama's post-earthquake residential landscape into a contemporary entertainment destination, revealing how this small stretch of Nerima has repeatedly reinvented recreation while retaining traces of what came before.
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