Seoul! Subway line #3: The subway I used to ride the most…. Teheran Road… Had a 2 week somewhat long somewhat short visit to Seoul, which never sleeps. The City has changed a lot again since last visit of Oct 2007.. 2010.04 Share this: Share on Facebook (Opens in new window) Facebook Share on X (Opens in new window) X Like Loading... Related Published by seongjyoon :) View all posts by seongjyoon