Seoul has been a capital for more than six centuries, and it looks like it. A Joseon king picked this spot in 1394, ringed it with mountains and a stone wall, and built palaces at the foot of the northern peak. They were burned in a war, rebuilt, sold off for parts under Japanese colonial rule, rebuilt again, and today they sit between glass towers and six-lane roads. Then came the 20th century: a war that flattened much of the city, a decades-long sprint from poverty to one of the biggest economies on Earth, and a pop-culture machine that now sells K-everything to the planet.
That contrast is the whole point of the place. In one day you can stand in a throne hall from 1395, eat at a market that has been trading for over a century, and end up in a Hongdae club at midnight. The city is huge, safe, clean and very well connected. What takes time is the food, the hills, the palace queues and the fact that places close on different days. Five days is the right length: enough for the palaces, the markets, the towers and the neighborhoods, plus a full day at the DMZ, only about an hour's drive from downtown.
The plan keeps each day in one part of town. Day one is Gyeongbokgung, Bukchon and Insadong, day two is Changdeokgung, Jongmyo, Gwangjang Market and Cheonggyecheon, day three is the DMZ, day four is Namdaemun, Myeongdong, Namsan and Hongdae, and day five is Gangnam, COEX and Lotte World Tower. Start on a Wednesday if you can: Gyeongbokgung and Jongmyo close on Tuesdays, Changdeokgung on Mondays, and the DMZ tunnel and observatory on Mondays, so Wednesday to Sunday finds everything open. More on the country in our South Korea page, and if you have more days, the KTX gets you to the beaches and markets of Busan in under three hours.