Sangdang Sanseong, Mountain fortress in Cheongju, South Korea.
The granite stone walls of Sangdang Sanseong extend across 704,609 square meters on the slopes of Uamsan mountain in Chungcheongbuk province.
Records from the Three Kingdoms period mention this fortress, which underwent major reconstructions in 1596 following Japanese invasion damage and again in 1716 under King Sukjong.
The fortress complex contained five ponds, three Buddhist temples, government offices, and warehouses, reflecting the administrative and religious functions of ancient Korean society.
Visitors can access the fortress daily from 9 AM to 6 PM between March and October, and from 9 AM to 5 PM from November to February via bus 862 from Cheongju Stadium.
Three main gates, two plain gates, three turrets, and three waterways form the defensive system of this fortress, demonstrating advanced military engineering of medieval Korea.
Location: Cheongju
GPS coordinates: 36.65924,127.54030
Latest update: March 3, 2025 23:51
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