Seoul Forest, Urban park in Seongdong District, South Korea

Seoul Forest opened on 18 June 2005 on the former Ttukseom racecourse and golf course site in Seongsu-dong, Seongdong District, and covers about 1,156,498 m², making it Seoul's third largest park after World Cup Park and Olympic Park. It is divided into five themed sections: the 220,000 m² Cultural Art Park with the equestrian statue Gunmasang, the 165,000 m² Ecological Forest, the 85,000 m² Nature Experience Study Field with an insect botanical garden, the 70,000 m² Wetlands Ecological Field, and the 66,000 m² Han River Waterside Park.

The site originated as a royal hunting forest and was later used as a water treatment facility before being transformed into a public park in the early 2000s. This conversion gave the location new purpose as a recreational space for the city.

The name Ttukseom comes from the island shape formed where the Jungnangcheon meets the Han River; a flagpole called a dokgi marked the royal hunting grounds. In the Cultural Art Park stands a statue of a military horse, a reference to the racecourse that operated here from 1954 until it moved to Gwacheon in 1989. Since August 2017, Seongdong District has restricted large companies and franchise chains from opening on Seoul Forest Road in Seongsu-dong.

Seoul Forest is served by Ttukseom station on Line 2 (exit 8) and Seoul Forest station on the Suin-Bundang Line (exit 3); buses also stop nearby. Admission is free and the park stays open all year. The Ecological Forest section keeps longer hours than the insect and butterfly gardens, which close on Mondays. The grounds are large, so allow time to walk between the five themed sections.

The park hosts more than 100 animal species and features an outdoor classroom where visitors can learn about nature. This educational approach sets it apart from other urban parks in the region.