This “Palace Greatly Blessed by Heaven” was once the heart of Korea. It was the power center of the Joseon dynasty (1392–1897), and was originally built in 1395—some new digs for a new dynasty. Like the Forbidden City in Beijing, the palace is a complex of buildings—a throne hall, the king’s living quarters and more—a sort of city inside a city, accented by gardens and pavilions. The Japanese flattened the place in the 1590s, and the site remained a ruin until a complete reconstruction in 1867 brought back more than 500 buildings. At the Gwanghwamun Gate, soldiers, beautifully costumed in red robes, still perform the changing of the guard. Seoul has other palaces, but this is the one to see if your time in town is limited.