Subway

The most convenient form of transport in Korea. You can get to any place by metro; many institutions write the nearest metro station in their address, since they are everywhere. To pay, permanent residents use special cards, which they buy at a convenience store and top up immediately there. For one-time use, there are tokens that can be purchased through a machine right in front of the metro entrance. For convenient use of the metro, there is the Kakao map application, where you can see all the lines and stations :)