Spots:
The 1st Shop of Coffee Prince at Hongdae
63 Building
Amethyst Factory
Artinus Farmer's Table
Choenggyecheon Stream
Coex Aquarium & Mall
DaeJanggeum Theme Park
Dongdaemun Fashion Market
Drawing Show
Everland
The Famous Beauty Salon at Nine Apple
Fountain of Banpo Bridge
Ginseng Center
Gyeonggi English Village
Heyri Art Vilage
more...

Choenggyecheon Stream is newly restored by the South Korean Government, it attracts tons of visitors every year. It's located near Dongdaemun Stadium.