The wall that once ringed all of Seoul is 18.6 km long, built in 1396, and you only need to walk 2.1 km of it to get the best sunset view in the city. Naksan: The Easy Wall Section Start at Hyehwa Station (Line 4, Exit 2) and walk through Ihwa Mural Village before climbing the illuminated stone battlements to Naksan Park’s 125-meter summit, then descend along the wall to Heunginjimun (Dongdaemun Gate, Line 1/4).

Show up at Gyeongbokgung on a Tuesday and you’ll find the gates shut while every other palace in the city is open, because Seoul’s five royal sites don’t share a single closing day. Five Palaces, One Different Closing Day Gyeongbokgung, the largest and most photographed of the five, closes on Tuesdays; standard admission is KRW 3,000, and the Royal Guard Changing Ceremony runs free at 10:00 and 14:00 outside Heungnyemun. Changdeokgung, Changgyeonggung, Deoksugung, and Gyeonghuigung all close on Mondays instead.

Private cars and taxis are banned from driving up Namsan, which is exactly what makes the cable car ride to the top feel like the start of a date rather than a commute. Namsan and the Love Lock Terraces Walk 10 minutes from Myeongdong Station Exit 3 to the Namsan Ormi outdoor elevator, then ride the Namsan Cable Car up for a round-trip fare of roughly KRW 17,000 adult, or take Namsan Sunhwan Shuttle Bus 01A/01B for a T-money fare of KRW 1,400 if you’d rather save the won.

Seoul Station is less a train stop than a launchpad, and once you’re through the gates, most of the Korean peninsula is a KTX ride of two to three hours away. Gyeongju: The Museum Without Walls KTX runs from Seoul Station to Singyeongju Station in about 2 hours 5 minutes for roughly KRW 49,300 one way; local bus 50, 51, or 700 covers the last 20 minutes into downtown Gyeongju. Give it two days and one night.

A humid August afternoon or a sub-zero January morning doesn’t cancel a Seoul family day, because the city’s biggest theme park is entirely under a glass dome. Lotte World Adventure, Rain or Snow Lotte World sits directly above Jamsil Station (Line 2 and 8, Exit 4), and its Adventure section is the world’s largest indoor theme park: Pharaoh’s Fury, the French Revolution loop coaster, a pirate ship, and a subterranean ice rink, all shielded from the weather.

Two rival hop-on hop-off buses cover the same downtown palaces from opposite ends of the city, and picking the wrong departure point costs you twenty minutes of walking before you’ve even boarded. Hop-On Hop-Off: Tiger Bus vs. Yellow Balloon Tiger Bus leaves from the Koreana Hotel ticket booth near Gwanghwamun (Line 5, Exit 6). Its Downtown Palace Namsan Course loops Gyeongbokgung, Changdeokgung, Insadong, DDP, Myeongdong, and N Seoul Tower for KRW 24,000 adult.

Put on a hanbok before breakfast and the ticket booths at Seoul’s grand palaces stop charging you for the rest of the day. That single swap of clothes is the cheapest activity in the city, and it sets the pace for everything else below. The rule itself comes straight from the Royal Palaces and Tombs Center , the government body that manages every palace gate in Seoul. Hanbok and the Four Palaces Rental shops cluster around Anguk Station, Gwanghwamun, and Bukchon, with names like One Day Hanbok and Hanboknam doing the busiest trade.

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.