People walk on Seoullo 7017, a Linear Park in Seoul. Seoullo 7017, also known as the Seoul Skygarden or Skypark, is an elevated, linear park in Seoul, built on top a former highway overpass. The path, which is about one Kilometre in length and lined with 24,000 plants and was opened in May 2017. The path also improves walking times for people around the city's Central Station. The disused overpass closed in 2015 and cuts diagonally across Seoul Station at 17m above street level. The '70' in the name comes from the year 1970 when the flyover was dedicated, while the '17' is both the number of walkways connected to it, and the year 2017. (Photo by Kim Jae-Hwan / SOPA Images/Sipa USA)