시립성동청소년센터
Sports facility · Seongdong-gu
Public indoor pool in Seongdong-gu with a 5-lane, 25m adult pool and a toddler pool. Open swim 1,000 won per session, and there is a gym on site. Session times change monthly, so check before you go.
Official hours and feesOpen in a map app
Source: sports.seoul.go.kr · Seoul public sports facilities dataset
Seongdong-gu Mujigae Library
FreeLibrary · Wangsimni Stn. (Lines 2, 5, Suin-Bundang Line, Gyeongui-Jungang Line)
Public library in Seongdong-gu. Free entry and reading, fully heated and air-conditioned.
Seongdong-gu Cheonggye Library
FreeLibrary · Wangsimni Stn. (Lines 2, 5, Suin-Bundang Line, Gyeongui-Jungang Line)
Public library in Seongdong-gu. Free entry and reading, fully heated and air-conditioned.
Seongdong District Library
FreeLibrary · Haengdang Stn. (Line 5)
A quiet neighbourhood library on a hill in Haengdang-dong. A free climate-controlled rest stop between Seongsu and Seoul Forest outings.
Majang National Sports Center
₩4,000Sports facility · Wangsimni Stn. (Lines 2, 5, Suin-Bundang Line, Gyeongui-Jungang Line)
Public indoor pool in Seongdong-gu. Six-lane 25m adult pool. Open swim is 4,000 won per session. There is also a gym. Open swim time slots change monthly, so check before you go.
Seoul Youth Center Seongdong
FreeStudy & youth space · Majang Stn. (Line 5)
A lounge, study and community space free for all young people, part of the Seoul Youth Center Orang network.
Cheonggyecheon Shanty Town Experience Hall
FreeHistoric site · Yongdu Stn. (Line 2)
Recreated 1960s-70s shacks, an old classroom and a corner shop. Pair it with the free Cheonggyecheon Museum next door.

King Onjo Culture and Sports Hall
₩4,400Gangdong-gu · Godeok Stn. (Line 5)
Public indoor pool in Gangdong-gu, with a 6-lane adult pool and a toddler pool. Open swim costs 4,400 won per session. Open-swim time slots change monthly, so check before you go.
Jamsil Sports Complex Swimming Pool 1
₩4,000Songpa-gu · Sports Complex Stn. (Lines 2, 9)
Public indoor pool in Songpa-gu, with a 2-lane competition pool (50m x 25m) and a 10-lane diving pool (25m x 25m). Open swim costs 4,000 won per session. Open-swim time slots change monthly, so check before you go.

Olympic Swimming Pool
₩7,000Songpa-gu · Olympic Park Stn. (Lines 5, 9)
Public indoor pool with open swim.
Geumcheon Community Culture and Sports Center
₩4,200Geumcheon-gu · 독산4동
Public indoor pool in Geumcheon-gu. Six-lane adult pool plus a toddler pool. Open swim is 4,200 won per session. Open swim time slots change monthly, so check before you go.
Eunpyeong Community Sports Center
₩4,000Eunpyeong-gu · Gupabal Stn. (Line 3)
Public indoor pool in Eunpyeong-gu. Seven-lane 25m adult pool plus a toddler pool. Open swim is 4,000 won per session. There is also a gym. Open swim time slots change monthly, so check before you go.