Bitcoin Center Korea in Itaewon hosts a bitcoin ATM where people can exchange cash for bitcoin or vise-versa. They also help people send money through the Bitcoin network which is often times faster and cheaper than traditional banks or money transmitters.
Directions: Out Itaewon Station Exit 2, take the first left up the hill next to the Hamilton Hotel (8.2)*. At the T-intersection, turn right. The Bitcoin Center is located just on the right.