seoullo 7017 seoul skygarden, elevated linear park built atop a former highway overpass in seoul, south korea

seoullo 7017 seoul urban city landmark korea asia park pedestrian road downtown skyline garden modern sky metropolis south korean overpass elevated tree project crossing asian manmade flower crossway linear station junggu skygarden skypark high line mvrdv nursery trees plants terraces namdaemun east structure building architecture infrastructure jung district view greenery railway