Seoul, South Korea. If you never been i suggest you visit once in your life. Everything from the language, Customs, and Traditions are awesome. The people may seem rude on the streets the way they bump into you but its really crowded with over 50 million people in South Korea. The people are eager to learn and teach any and everything they can. I taught English and learned Korean as a hobby during my time there.
Cheonggyecheon river in Seoul. This used to be a highway. Ancienne autoroute de Séoul, retirée pour laisser place à la rivière Cheonggyecheon. http://www.urbanews.fr/2014/02/11/39781-seoul-se-separe-de-sa-premiere-autoroute-urbaine/