Seoul has a lot to offer. One reason as to why I liked Seoul so much more than Tokyo was that Seoul has different districts that differ widely in what kind of things you can do there. Whether you like shopping, culture or history: Seoul got it all, and most is even for free! (except the shopping, but even there you will get tons of freebies!) Even living there for 5 months I wasn't able to see it all - however, I was very blessed with Korean friends who tried to give me an amazing and unique experience to enjoy their country and took me to various places throughout my stay. If you ever wonder where to go in Seoul, here are my personal top ten favorites to visit in Seoul:
#1 Ihwa Mural Village (+ Naksan Park)
This was actually one of the very last places I got to visit while living in Korea. A friend who knew that I loved photography took me there because you have an amazing view over the Eastern part of the city from the Naksan hill and can have a slow walk down to get to Ihwa Mural Village where a whole district is plastered with amazing drawings and illusions on walls and stairs.