Running right through the downtown of Seoul is an 11km stream, one of the longest in the world. Just a few stairsteps down from the Cheonggyecheon street magically teleport walkers from the hustle and bustle of the hi-tech metropolis to a serene recreation area. People come here to unwind after a day of hard work, focus before an important meeting or just sit and chat near the water.
The stream has been part of Seoul since its early history and dates as far as 12th century, however during the economic boom it got covered with a concrete pavement.
Recently however the highway was removed to restore the stream and build a public area around it. Since then, it has been one of the brightest examples of sustainable urban design, demonstrating how modern mega-cities can mix sleek infrastructure with lush greenery and water reserves.