Free things to do in Seoul

Seoul's free list is mostly outdoors, and it works because the city is walkable and the subway is cheap. Build a day around one paid anchor and fill the rest with these.

Start at Gwanghwamun, walk the palace wall, then follow the Cheonggyecheon stream east to Dongdaemun. That is 3–4 km of flat, signposted path with no ticket. From there, Gwangjang Market is a browse-first stop: the food stalls are paid, the market itself is not.

For a view, walk up Namsan rather than taking the cable car. The loop trail from the National Theater or from Huam-dong takes 40–60 minutes uphill; the tower plaza is free, the observatory is not. Bukhansan National Park is the bigger version: subway to Bukhansan Ui or Gupabal, then a 3–5 hour hike, no entry fee.

On the river, the Han River parks (Yeouido, Ttukseom, Banpo) are free, with picnic tables, bike paths and the Banpo Bridge fountain show in the warmer months. Rent a mat from a convenience store or bring one.

Most free stops sit inside the old city wall or just outside it, which makes a single walking day realistic. Gwanghwamun, Cheonggyecheon, Gwangjang Market, Dongdaemun and the Naksan section of the city wall form a rough loop of 8–10 km.

Namsan sits south of Myeongdong; Bukhansan is far north and needs its own half day. The Han River parks are spread out, so pick one rather than trying to link them.

Approximate coordinates: Gwanghwamun 37.5760, 126.9769 · Cheonggyecheon start 37.5690, 126.9784 · Gwangjang Market 37.5700, 126.9996 · Namsan tower plaza 37.5512, 126.9882 · Bukhansan Ui station 37.6586, 127.0064 · Yeouido Han River Park 37.5285, 126.9340. All approximate.

Get a T-money card at a convenience store and top it up; single-ride paper tickets cost more and add a deposit. Subway base fare is around 1,400 won (2026 estimate, check), and transfers between lines are free within the paid area.

Many free sights are outdoors and unlit at night, so plan the walking parts for daylight and keep the evening for markets, streams and river parks, which stay open and are lit.

Palace grounds are closed one weekday, usually Monday or Tuesday depending on the palace, so check before you build a day around one. Hanbok rental shops cluster near Gyeongbokgung and Anguk; renting is the paid part, entry is then free.

Public toilets are common in subway stations, markets and parks. Convenience stores sell cheap picnic food for the river parks. Tipping is not expected.

April to June and September to November are the best walking months: mild, dry and the reason most free outdoor sights are worth the trip. Cherry blossom in early-to-mid April and autumn colour in late October to early November are the busiest, so go early in the day.

July and August are hot and humid with heavy rain, which pushes you indoors; the free museum galleries and underground arcades are the fallback. December to February is cold and dry, and the palaces and trails are quiet but icy underfoot.

Weekday mornings are the calmest for palaces, Bukchon and Bukhansan. Weekends fill the river parks and markets, which is fine if you want atmosphere and worse if you want space.