Two days in Seoul is exactly enough time to fall for the city’s split personality: centuries-old royal palaces one block, glowing skyscrapers the next. This plan keeps you in the historic north on day one (Gyeongbokgung Palace in a rented hanbok, then Bukchon Hanok Village), then sends you into Myeongdong’s shopping chaos and an N Seoul Tower sunset on day two. South Korea’s capital runs on the Korean won (KRW), a T-money transit card, and Naver Map or KakaoMap instead of Google Maps, which still barely works here.

Three days in Seoul is enough to get past the palace-and-shopping surface and into the neighborhoods that make the city worth a return trip. This plan runs Gyeongbokgung and Bukchon on day one, Hongdae and a proper Gwangjang Market food crawl on day two, then Dongdaemun and a jjimjilbang night on day three. It nests the 2-day core inside it, so if you’re short on time, cut day three and you still get a complete trip.

Four days in Seoul is the sweet spot where the city stops being a highlights reel and turns into somewhere you actually get to know. This plan nests the full 3-day core, Gyeongbokgung and Bukchon, Hongdae and Gwangjang Market, Dongdaemun and a jjimjilbang night, then adds a whole day south of the river: Gangnam, COEX and a proper Korean BBQ-to-chimaek finale by the Han River. It’s South Korea’s capital, not North Korea’s, an easy mix-up if you’ve only ever seen Korea in the news, and one of the safest, most walkable big cities in Asia.

Six days is the sweet spot for going deep on Seoul without a single repeated neighborhood: all five grand palaces including Changdeokgung’s Secret Garden, the historic north, Hongdae’s noise, Gangnam’s polish, Dongdaemun’s markets, plus Seongsu, Ikseon-dong and the Han River parks on the back end. Shorter trip? See the 2-day , 3-day and 4-day versions. Have a full week? The 7-day itinerary builds on this same route. The complete Seoul guide covers everything outside a fixed day plan.

Seven days is enough to stop rationing Seoul and actually live in it: all five grand palaces, the hanok alleys of the historic north, Hongdae’s buskers, Gangnam’s glass towers and K-pop offices, Dongdaemun’s overnight markets, Seongsu’s converted warehouses and a full jjimjilbang night, each day its own neighborhood, never doubling back. Seoul runs on the Korean won, not yen or yuan, and a T-money card is the one thing you tap for all of it.

Seoul is South Korea’s capital, roughly 9.6 million people on the Han River, and in 2026 it is one of the easiest big Asian capitals to walk straight into: most major tourist-source passports clear entry with nothing but a stamped passport, no K-ETA application, no separate visa. That waiver runs through 31 December 2026, so treat it as a dated fact, not a permanent rule. Everything past the airport is the fun part: centuries-old palaces sit two subway stops from Gangnam’s glass towers, the food scene rewards wandering into any alley, and the K-wave gives plenty of visitors a reason to fly in that has nothing to do with a checklist.