Most first-time trips to Seoul stumble on the same small set of avoidable errors, and nearly all of them happen in the first 48 hours. The biggest: skipping the T-money card and then fumbling with cash on buses that no longer take it. Planning Gyeongbokgung for a Tuesday, the one weekday the palace is closed. Packing Myeongdong, Hongdae, and Gangnam into a single day. And navigating the whole trip on Google Maps alone, which still cannot give walking directions in Korea. Fix these four and the rest of the trip mostly takes care of itself.
I made two of these mistakes on my own first visit, years ago, and I have since watched friends repeat the other two almost verbatim. Seoul is one of the easiest big cities in the world to travel once you know the local rules. But a few systems here work differently enough from home that the obvious approach backfires. Here is what goes wrong, and what to do instead.
Why do so many visitors skip the T-money card?
Because it looks optional. You land, you see ticket machines, you figure you will just buy single rides or tap your credit card. Then you board your first city bus, the driver shakes his head, and you realize many Seoul buses have gone completely cashless — no card, no ride. A T-money card is a rechargeable stored-value card that pays for subways, buses, most taxis, and even convenience store snacks with one tap.
Buy the plastic card at any convenience store — CU, GS25, 7-Eleven — or a subway station machine for a few thousand won, then load cash onto it at the same places. Tap in and tap out: the tap-out matters, because it calculates the correct fare (around 1,550 won for a basic subway ride) and keeps your free transfers valid. The balance never expires, so the card still works on your next trip. Foreign cards work at many gates, but buses are less forgiving — get the T-money on day one.
Photo: zisk, Public domain, via Wikimedia Commons
Is it really a mistake to visit Gyeongbokgung on a Tuesday?
Yes — Gyeongbokgung is closed every Tuesday, and the Tuesday closure is the single most common palace planning error in Seoul. The guard-changing ceremony at Gwanghwamun Gate does not run that day either. If your itinerary has exactly one palace morning, do not let it land on a Tuesday.
Photo: *Youngjin, CC BY-SA 4.0, via Wikimedia Commons
The trap goes deeper than one palace. Seoul's royal sites split across two closing days: Gyeongbokgung and Jongmyo Shrine close on Tuesdays, while Changdeokgung, Changgyeonggung, and Deoksugung close on Mondays. There is one useful exception — if the closing day falls on a public holiday, the palace opens that day and closes on the next non-holiday weekday instead. So a Tuesday-only free day is not wasted: visit Changdeokgung or Deoksugung instead. Standard adult admission is 3,000 won, and wearing a complete hanbok gets you in free.
Why can't you just use Google Maps in Seoul?
Because in Korea, Google Maps can show you places and transit routes but still cannot give turn-by-turn walking or driving directions. On a transit route, the walk from the station to your destination appears as a dotted line — and that last few hundred meters, which exit to take and which side of a wide road you need, is exactly where visitors get lost. Korea approved the export of detailed map data in early 2026, but the full navigation features had not launched as of late 2026.
The fix is simple: install Naver Map before you fly and set it to English. It gives walking, subway, and bus directions, tells you the exact subway exit number, and its business listings are the deepest in the country. Keep KakaoMap as a backup — it is strong on real-time bus tracking and pairs with the Kakao T taxi app. Both are free and work without a Korean phone number. Use Google Maps for what it is good at — saving places before the trip and reading reviews — then switch to the Korean app to actually get there.
Why is cramming distant neighborhoods into one day a mistake?
Because Seoul is enormous, and the names on a first-timer's list sit much farther apart than they look on a map. Myeongdong, Hongdae, and Gangnam form a triangle that eats an hour or more of transit each leg once you count transfers, long station walks, and finding the right exit. Three "quick stops" becomes a day spent underground.
Photo: ume-y, CC BY 2.0, via Wikimedia Commons
The subway itself is fast and frequent — the mistake is not the train, it is the plan. Group your days by cluster instead: the palace district (Gyeongbokgung, Bukchon, Insadong) is one natural day; Hongdae and the Mapo side of the river is another. Give each neighborhood at least half a day, and leave slack in the schedule — Seoul rewards wandering, and a packed plan means sprinting past the side streets that make each area worth visiting.
Photo: U0894629, CC BY-SA 4.0, via Wikimedia Commons
Do you really need to worry about the last train?
Yes, at least loosely. Seoul's subway winds down around midnight, and the gap until the first morning train is real. Miss it and your options are night buses or a taxi at several times the subway fare. The mistake is not staying out late — it is staying out late without a plan for getting back.
Before a late night out, check the last departure from your station in Naver Map and set a phone alarm for twenty minutes before it. It is a five-minute check that prevents the 1 a.m. stranded-at-the-station experience I have watched too many visitors have.
| Mistake | Why it happens | What to do instead |
|---|---|---|
| No T-money card | Looks optional; visitors assume cash or credit cards work everywhere | Buy one at a convenience store on day one and tap in and out |
| Palace on a Tuesday | Most attractions have no weekly closing day at home | Check the closing day per palace — Tuesdays for Gyeongbokgung, Mondays for Changdeokgung and Deoksugung |
| Google Maps only | It works fine everywhere else in the world | Install Naver Map in English before you fly; keep KakaoMap as backup |
| Far-apart neighborhoods in one day | The names look close together on a tourist map | Cluster days by area and give each neighborhood at least half a day |
| Ignoring the last train | At home, transit runs late or rideshares are cheap | Check the last departure in your map app and set an alarm before a late night out |
FAQ
Do I need a Korean phone number to use Naver Map?
No. Search and directions work without a Korean number or even an account — an account only syncs your saved places. If an English search finds nothing, paste the Korean name of the place or its phone number, which matches far more reliably than romanized spellings.
Can I just use my foreign credit card instead of a T-money card?
Many subway gates now accept foreign contactless cards, but buses are less forgiving and some foreign cards get declined at readers. A T-money card costs a few thousand won, works on virtually everything including cashless buses and convenience stores, and the balance never expires. It is the safer default.
What should I do if Tuesday is my only free day for palaces?
Visit Changdeokgung or Deoksugung, which close on Mondays and are open on Tuesdays — or flip it and do Gyeongbokgung another day. Alternatively, spend the Tuesday in Bukchon Hanok Village, Insadong, or Gwangjang Market.
Is the Climate Card a better deal than T-money?
It depends on how much you ride. The Climate Card's short-term passes give unlimited subway and bus rides for a flat price, so heavy sightseeing days can come out ahead. For short stays or light transit use, pay-per-ride T-money is simpler.