서울새활용플라자
Culture space · Seongdong-gu
Korea's largest upcycling complex, with designer studios, a materials library and an upcycle shop. Best visited Tuesday to Friday on your own.
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Source: seoulup.or.kr
Jungnang Water Recycling Center Badminton Court
FreeSports facility · Janghanpyeong Stn. (Line 5)
Indoor badminton court in Seongdong-gu. 3 courts.
Seoul Sewerage Science Museum
FreeMuseum · Yongdap Stn. (Line 2)
Built atop a working sewage treatment plant, with views of the underground facilities. A good rainy-day outing for kids.
Yongdap Sports Center
₩4,000Sports facility · Yongdap Stn. (Line 2)
Public indoor pool in Seongdong-gu with a 5-lane adult pool. Open swim 4,000 won per session, and there is a gym on site. Session times change monthly, so check before you go.
Youth Job Cafe Branch 4
FreeStudy & youth space · Janghanpyeong Stn. (Line 5)
Free study rooms and employment support space for young people.
Hanyang Women's University Art Museum
FreeArt gallery · Yongdap Stn. (Line 2)
Haengwon Gallery, located on the 1st floor of the library.
Salgoji Trail
FreeStream & walk · Ttukseom Stn. (Line 2)
A walking path at the confluence of the Jungnangcheon and Cheonggyecheon streams. Salgoji Bridge, the longest stone bridge of the Joseon era, sits midway along.

Hyundai Card Music Library
Free if eligibleYongsan-gu · Hangangjin Stn. (Line 6)
A music library with some 10,000 vinyl records and rare albums. An Itaewon hotspot you can enjoy free with a card or just the DIVE app.

Culture Station Seoul 284
FreeJung-gu · Seoul Stn. (Lines 1, 4, Gyeongui-Jungang Line) Exit 2
A cultural complex in the restored old Seoul Station building. The Renaissance-style architecture is a sight in itself, with free special exhibitions year-round. In front of Seoul Station.
Oil Tank Culture Park
FreeMapo-gu · World Cup Stadium Stn. (Line 6) Exit 2
A cultural park converted from a former oil storage depot. Unusual walks between the giant tanks, free exhibitions and a lawn, with weekend markets and performances.
Youngpoong Bookstore Jongno
FreeJongno-gu · Jonggak Stn. (Line 1), direct access from Exit 4
A large bookstore directly connected to Jonggak Station. Easy to pair with a Cheonggyecheon walk, with plenty of seating to read out of the heat or cold.

Hyundai Motorstudio Seoul
FreeGangnam-gu · Apgujeong Rodeo Stn. (Suin-Bundang Line)
Hyundai and Genesis cars and design on display. Open until 21:00, but closed the first Monday of the month; parking costs extra.