Going to korea for whole summer, what should i do? looking for unique activities, inexpensive plays, fairs etc?

i'm going to korea for the 1st time in 14 years since i was born there and moved here (to the US) at 3. i'll be spending a whole 2 months there so i need to start planning now bc i'm attending classes too. i want to go to unique cultural plays, festivals, fairs, etc. the plane and everything else is already high-priced so they'll have to be affordable. and any other cool places (coffee shops, book stores, ancient historic sites, museums, libraries, churches, cathedrals, parks, amusement parks, etc?) thanks!!

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Answer:
i've been here for 2yrs now and i got 1more to go , i couldn’t have a superior time in korea without www.tour2korea.com this website will give you all the info you need to know and easy places to go.(it's not a tour booking website) it's the official korean tourism page.
tour booking you can try :www.triptokorea.com.
if you have an american passport you should try the USO office near the yongsan army post for a DMZ tour( highly advocate it).
Welcome back home. I know it changed a lot from when you where last here.

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Answer:
i go to korea a lot. Ill jsut write some of the places i had fun in. You should check out lotte world it is a very large amusement park. You should try myung dong, its a very crowded but thrilling shopping district. You can visit the korean national buildings that are located in seoul. I think those buildings look cool becuaes they’re placed in such a modern city where lights are everywhere with the old building in the middle.