20231.首尔地铁12,779条韩国景点点评公共交通系统中区By Tripadvisor用户The coverage map looks intimidating, but the system is so extensive and simple to use. The subway app shows you all the routes and connections for a easy commute. The infrastructure is amazing from both a technologic aspect, as well as the engineering. Our new construction in Toronto can't even get the tracks to align! Our trip to the airport was really convenient and efficient. Bravo!