Gyeonggi

Hwaseong, the fortress at Suwon, is the province's headline and one of the more satisfying heritage sites in the country because it is not a static monument — it is a nearly six-kilometre circuit of walls, gates, command posts and archery pavilions that you walk, with the living city on both sides of you the whole way. It was built at the end of the eighteenth century using methods advanced enough for the period that the construction record itself survives as a document, which is part of why the site carries its international listing and why reconstruction after later damage could be so faithful. The full loop takes a couple of unhurried hours and passes through enough gates and shifts in ground level to stay interesting; the northern stretch over the hill gives the best views back across the walls.

In the hills south-east of Seoul, Namhansanseong is a mountain fortress of a different character — a long defensive wall following ridgelines through forest, with temple sites and a small settlement inside the enclosure. It is also internationally listed, it is reachable from central Seoul on the metro plus a short bus, and it sees a fraction of Suwon's visitors. The appeal is the walk: several hours of ridge path along the wall with the capital's sprawl appearing and disappearing below, which makes it one of the best half-day hikes available to someone based in the city without a car.

The province holds the country's best-known folk village, a large open-air site recreating pre-modern Korean settlement across regional house types, with craft demonstrations, seasonal performances and enough ground to fill a half-day comfortably. It is a reconstruction rather than an inhabited village, which is worth knowing if you have already seen the genuinely lived-in ones elsewhere in the country — the trade is that everything is explained and accessible in a way a working village cannot be. In the same corridor sits Korea's largest theme park, which is a serious domestic destination in its own right and busy accordingly at weekends and through school holidays.

North-west of Seoul, Paju has developed an unusual cluster of cultural destinations: a purpose-built publishing town of architecturally ambitious buildings, and an artists' village nearby with galleries, cafés and studio spaces. Both make an easy and pleasantly low-key day out from the capital for anyone who has had enough palaces. The province continues north from here to the border area, and organised tours to it depart through this corridor — the border itself, what can be visited and how access works, has its own dedicated guide.

Gyeonggi is a day-trip province rather than a base. The metro reaches Suwon and much of the western half directly, regional trains and buses cover the rest, and the same rechargeable card works throughout, so nothing here requires planning beyond deciding which day to go. The practical advice is to pair sites by direction rather than by theme — the fortress and the folk village sit in the same southern corridor, the mountain fortress is south-east, and the publishing and art towns are north-west — because the province is large enough that crossing it laterally costs more time than any of the individual sites is worth.