Seoul City Wall, Stone fortress wall in Seoul, South Korea

The Seoul City Wall is a historic fortification in Seoul, South Korea, built from granite blocks and featuring several gates and watchtowers. The structure follows natural ridges and valleys as it runs through different neighborhoods.

King Taejo launched construction of the wall in 1395, and most of it, including the Eight Gates, was finished in 1396. King Sejong the Great replaced earthen sections with rectangular stone in the mid-15th century, and King Sukjong rebuilt stretches with large uniform slabs in 1704. The Japanese colonial government later demolished parts, including Seodaemun, and the wall was designated a Historic Site in 1963.

The name reflects Seoul's role as the capital when the fortification enclosed the royal palace and administrative buildings of the Joseon rulers. Today, residents often walk along the preserved sections for exercise and leisure, connecting neighborhoods through the elevated pathways.

Sections can be reached through various entry points accessible by public transport, with signage guiding walkers along the routes. Sturdy footwear is advisable as some paths cross uneven ground and steep staircases.

Some stone blocks carry carved markings indicating which village community or work group built each section. These inscriptions offer insight into the organization of construction labor in the late 14th century.