Admission is free. Seoul City Wall: It might not be as long as the Great Wall in China, but Seoul was once surrounded by a defensive wall. There is still a small section of the wall standing that ...

or the Seoul City Wall, passing key historic sites from Hanyang, the old name for Seoul. The 3.5-kilometer route takes about ...

But when builders broke ground, they discovered that a whole section of Seoul’s ancient wall had been buried below the stadium. So instead, the city created a park to memorialize the ...