One of the really interesting things about Seoul, is that South Korea is in the process of romanising their alphabet. Practically what this means, is that all signs (everything) is written in characters. There are some English translations of names and places, and we have a good map, but you don't quite realise (or at least I never did) how much you rely on roman lettering!
Regardless, we are having a great time getting around on our own and using the subway! Its a bit like the Tube, only there are many more lines that go farther out to the suburbs. As far as city travel goes though -- its fantastic!

We were trying to get the characters on the sign, but the flash slightly distorted the picture.

So here it is without the flash! Much better!

This is the wall of the station. The arrow points in the direction we are heading in, and Noksapyeong is the station we are at and the other stations on the sign are the station before this one and the station after.