old market in seoul

- how about to go to dongdaemun market?
it is clouded all night.
Exit14, Dongdaemun History & Culture Park Station Line 2, 4, 5
Exit8 or 9, Dongdaemun Station Line 1

- how can we go to Itaewon underground market?
you can use subway line6.
5min from exit4, Itaewon station line6

- do you have any recommendations for a night market here in Seoul aside from Insadong?
many old market disappear in korea. also, this market  close at 19:00
line1, jonro 5ga

- any big old market near house?
there are worldcup market.
many japantour list visit this market.
mangwon subway station line6