공항동문화체육센터
Sports facility · Gangseo-gu
Public indoor pool in Gangseo-gu, on two basement and two above-ground floors, with a 5-lane 25m adult pool, a 1-lane 25m rehabilitation pool and a toddler pool. Open swim costs 3,500 won per session. Open-swim time slots 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
National Aviation Museum of Korea
FreeMuseum · Songjeong Stn. (Line 5)
Korea's only national aviation museum, next to Gimpo Airport. Real aircraft on display and flight simulators, free as part of the permanent exhibition.
Space K Seoul
₩8,000Art gallery · Magok Stn. (Line 5)
Space K is Kolon's arts and culture sharing space, established in 2011.
Onggigol Neighborhood Park Basketball Court
FreeSports facility · Sinbanghwa Stn. (Line 9)
Outdoor basketball court in Gangseo-gu. 1 court. Open 24 hours.
Gaehwasan Observatory
FreeViewpoint · Gaehwasan Stn. (Line 5)
A designated Seoul viewpoint at the 131m summit, looking out over Banghwa Bridge, the Han River, Haengju Fortress, World Cup Park and Bukhansan.
Kkwonggogae Park
FreePark · Banghwa Stn. (Line 5)
Park overview: Kkwonggogae Park has outstanding natural surroundings, but its terrain and slopes limit what facilities can be built. Neighbouring Banghwa Park is already facility-oriented with a wide range of amenities, so Kkwonggogae Park
Seoul Botanic Park
Partly freePark · Magongnaru Stn. (Line 9, Airport Railroad)
A large botanical park in Magok. The wide lawns, lake and wetland walks are free, and there's plenty to see even if you skip the paid greenhouse.

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.