seoul for first-timers, one line per neighborhood

for the group chat before every seoul layover turns into a real trip. t-money up top since you'll need it before anything else

01
T-money card
buy it at any convenience store near a subway stop, GS25/CU/7-Eleven all sell it. load cash separately, it's not linked to anything
02
Line 2, the green loop
connects Hongdae, Seongsu, and Gangnam on one line. plan a day around it instead of zigzagging
03
Hongdae
younger crowd, shopping, nightlife. loud, go later in the day
04
Seongsu-dong
converted warehouses, coffee, calmer than Hongdae despite being one stop away on the same line
05
Ikseon-dong
hanok houses turned into bars and cafes, small enough to walk in under two hours
06
Myeongdong
07
Gyeongbokgung Palace
closed on Tuesdays, check before you build a day around it
08
Jongno 3-ga station
gets you to Ikseon-dong directly on line 3
09
Incheon Airport: AREX train vs taxi
AREX is half the price of a taxi and barely slower outside rush hour
10
Book ahead: hanbok rental, DMZ tours, popular restaurant reservations
these three sell out fast if you wait until you land

Or start a list of your own. Free, it takes a minute.