Modern architecture of the HDC office block building in Seoul, South Korea, car traffic timelapse on Yeongdong-daero road at sunset

hdc building group youngchang modern architecture seoul main street yeongdongdaero coex ipark tower hdc shilla sunset freeway traffic car vehicle dusk sundown tamelapse gangnam skyscrapers buildings movement south korea design architectural futuristic main street heavy traffic infrastructure low angle view wide speed fast