Fun things to do in South Korea?

Travel Info
I need two fun things to do in South Korea for kids, and one for adults. Thank you. =]

Travel Tips

Great for kids & adults: Lotte World & Everland (Amusement parks), Korean Folk Village (my #1 recommendation), many Korean restaurants have indoor play areas for kids, visit to Mt. Sorak, Buddah's Birthday celebration in Seoul (I believe it's in May)

Great for adults: Shopping in Seoul (Itaewon, Nam dae mun, Dong dae mun areas), Cherry blossoms and a visit to the Korean Naval Academy in Jinhae (March/April), dinner cruise on the Han River

Others
stand on the border and taunt north koreans
go to Coex and spend money there, play arcade, jesus christ, u look like korean in ur avatar but u dont even know what fun things to do in korea.
You could go to Techno Mart and find any new gadgets out there. You could also go to garak market on line 8. That is where they get the Dog meat from. You could go to city hall there are lots of temples and 4 star hotels there. You could go to Yeoido to see building 63. You could go shopping in Meoyoung Dong or Itaewon. Here is a site for tourism. It also has a subway map on that site. It is very helpful.

http://english.seoul.go.kr/
http://english.seoul.go.kr/ also, lived there for several years.
kids - lotte world, everland, or woobang tower land (woobang tower land is for really small kids)

adults - go shopping, go to a korean folk village, go to the beach, and vist the mountains

* sorry i didint leave only two fun things for kids and one for adults.*
I am korean and been to korea