여의도한강공원
Park · Yeongdeungpo-gu
The flagship riverside park on the Han. Plenty of convenience stores, drinking fountains and toilets make refills easy, and the Mulbit Plaza side has good shade and benches.
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Source: hangang.seoul.go.kr
Yeouido Park
FreePark · Yeouido Stn. (Lines 5, 9)
A broad free park amid the office towers. Follow the walking paths and an underpass takes you through to Yeouido Han River Park.
Yeouido Park Basketball Court
FreeSports facility · National Assembly Stn. (Line 9)
Free outdoor basketball court in a Hangang riverside park.
Yeouisaetgang Library
FreeLibrary · Yeouido Stn. (Lines 5, 9)
Public library in Yeongdeungpo-gu. Free entry and reading, with heating and air conditioning.
The Hyundai Seoul Sounds Forest
FreeCulture space · Yeouido Stn. (Lines 5, 9)
An indoor garden of about 1,000 pyeong with natural grass and daylight through a glass ceiling above the trees. Perfect for rainy days or air-conditioned relief in midsummer.

Yeouido Brighton Library
FreeCulture space · Yeouinaru Stn. (Line 5)
Built on the site of the former MBC headquarters. Three sides are laid out on a single level around a sunken plaza, bringing daylight into the basement. Yeouido's first large public cultural facility.
Yeouido Saetgang Ecological Park
FreePark · Yeouido Stn. (Lines 5, 9)
Korea's first ecological park. A 'secret forest' of 5.5km of waterways and woodland paths among Yeouido's towers, with a reed tunnel in summer.
Seoul Forest
FreeSeongdong-gu · Seoul Forest Stn. (Suin-Bundang Line)
A large ecological park in the middle of the city. Lots of mature trees, shade and benches, with drinking fountains and toilets throughout, so summer walks are comfortable.
Gyeongui Line Forest Park
FreeMapo-gu · Hongik Univ. Stn. (Line 2, Airport Railroad, Gyeongui-Jungang Line)
A 6.3 km linear park on a former railway. The Yeonnam-dong stretch, nicknamed Yeontral Park, strings together shade, lawns and cafes. Few drinking fountains, so bring water.
Seoullo 7017
FreeJung-gu · Seoul Station Stn. (Lines 1, 4, Airport Railroad, Gyeongui-Jungang Line)
An elevated garden walkway converted from an old overpass, with planters, benches, a foot bath and drinking fountains. Lovely at night, so an evening stroll beats midday.
Naksan Park
FreeJongno-gu · Hyehwa Stn. (Line 4)
A hilltop park along the Seoul City Wall trail, known for city night views and sunsets. Carry water for the climb.
Seonyudo Park
FreeYeongdeungpo-gu · Seonyudo Stn. (Line 9)
An ecological park on an island in the Han, built from a former water treatment plant. Ivy-covered structures and green gardens, reached by the Rainbow Bridge, with many shaded paths.