Toshimaen

was an amusement park in Nerima, Tokyo, Japan, owned by the Seibu Group. It had a variety of rides, including three roller coasters, a water park with 25 slides and six pools, and Carousel El Dorado, the country's oldest operational amusement ride. It closed permanently on August 31, 2020 and was redeveloped into Warner Bros. Studio Tour Tokyo – The Making of Harry Potter which opened on June 16, 2023.

==Attractions== ===Carousel El Dorado=== thumb|left|Carousel El Dorado was formerly located in Steeplechase Park in Coney Island. Carousel El Dorado has non-jumping carousel figures installed on its rotating floor. The floor is divided into three parts and each ring turns at a different speed, with the outermost ring being the slowest and the innermost ring being the fastest. It was constructed in the Art Nouveau style, and is considered a valuable cultural property; it was given Mechanical Engineering Heritage status by the Japan Society of Mechanical Engineers on August 7, 2010.