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[2025 Seoul Attraction] Travel Guide for Achasanseong Fortress (Updated Apr)

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Mountain climbing
Achasan Fortress is a great place to have an unobstructed view of the Han River and its surrounding landscape. The mountain castle is hexagonal in shape, with a circumference of about 1 km, and is close to the valley. It is built on the top of the mountain at an altitude of 200 meters, facing the Han River and extending to the southeast, and the surrounding scenery is very beautiful. The name of the city came from the Joseon Dynasty Emperor Taejo (reigned from 1392 to 1398) who changed Adan to Achi, and is also called Changseoul or Gwangjangseong, which has important historical significance.
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Achasanseong Fortress Address:

Seoul, Gwangjin District, Walkerhill-ro, 117

Achasanseong Fortress Recommended sightseeing time:

1-2 hours

Achasanseong Fortress Phone:

+82-2-450-1655,+82-2-4501395

Achasanseong Fortress Ticket Price

Free entry
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