The public transportation system in Seoul is quite efficient. The main transport which I would prefer is the subway train. Seoul has quite an extensive underground railway network which covers the Seoul huge city and its satellite cities around. The train frequency is very high especially in the morning and in the evening. I would say the train will come around every 10 minutes. The underground network consists of 8 different routes in and out of Seoul. Each route (line) has its own color code. Just plan your way to the next destination using the subway map network. We might have to transfer from one line to another to go to another areas or city. Eventhough the frequency of the train service is high, still it is crowded in the morning because people would rather catch a train than driving into a congested seoul & its satellite city.On our way to the office we take a train to Moran station (about 15 minutes) and then we take the bus no 55 to the office at Bokgipeguan for another 15 minutes. Quite tiring because we have to climb steep staircase down and up the subway. Trust me, you won't be able to catch up your breath after came up the stairs.
Korea is known for its KTX bullet train just like Japan. I'm not so sure why it is so famous to the point that the story came out in Discovery channel on "Man Made Marvels". I did watch some part of the storyline but not the whole thing. It is said that the normal speed of the KTX goes up to 300 km/hr.
