Seung Gi filmed at Sangam-dong, Digital Media City today. It is located in Mapo-gu, Seoul, a bustling city well known for its high tech offices and shopping malls. Here is a link: DMC . He also filmed at Seoul Station starting from 11pm KST. The last 4 photos were taken there.
Credit: as labeled, dclsg, weibo, sgsunylove, shrimpzZzZi, sujeong