Cheonggyecheon
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Cheonggyecheon is a 10.9-kilometre-long stream and public space in downtown Seoul, South Korea. A natural stream sourced from the Suseongdong Valley in Inwangsan, it was historically maintained as par
Cheonggyecheon at sunrise
Cheonggyecheon in 1904
Cheonggyecheon under restoration in 2005
Shortly after reopening in 2005.
Braess's paradox
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Braess's paradox is the observation that adding one or more roads to a road network can slow down overall traffic flow through it. The paradox was first discovered by Arthur Pigou in 1920, and later n
Cheonggyecheon
…those in other parts of the city. The project sped up traffic around the city when the motorway was removed. It has been cited as a real-life example of Braess's paradox. Budgeted at ₩349 billion, the final cost of the project was over ₩386 billion (approximately US$281 million…
When an expressway in Seoul was removed so a creek could be restored, traffic flow in the area improved