[2] The disused overpass closed in 2015 and cuts diagonally across Seoul Station at 17m above street level.

[4] The park includes gardens, terraces, and exhibitions, and will "feature over 24,085 plants representing 228 species of trees, shrubs and flowers found in and outside Korea.

"[5] In the 1960s, a decade after the Korean War, Seoul planners "ordered the construction of dozens of elevated highways to keep traffic flowing through the capital.

Fast forward a few decades, and these hulking overpasses became not only a blight on the landscape, but also a safety risk.

[3] The park's plans faced early controversy over fears of traffic congestion and concerns from market owners in nearby Namdaemun.