Migliore is a big shopping mall in Dongdaemun with lots of wholesale shops. This is a mall where lots of teens shop. A lot of the product has a younger feel. E.g hip hop, K-Pop clothing styles. They do have clothes for everyone but you will notice lots of younger people there.
Directions: Dark blue line #1 or Light blue line #4, get off at Dongdaemun station. Then exit #8 (about a 2min walk)
or Green line #2 or Light blue line #4 or Purple line #5, get off at Dongdaemun History & Culture Park. Then exit #14 (about a 3 min walk)