In the city's long history, the earliest walls were built in Zhongdu, capital of the Jin Dynasty. At that time more than one million civilians and soldiers toiled for three years to expand the old ...

At some points, the walls are almost 20 feet thick and 82 feet high. They enclose the entire ... for shows like "Game of Thrones." Atop the city walls, you'll enjoy some of the best views of ...

The north part was left out of the city when the north wall was moved southwards in the early years of Ming Dynasty (1368-1644). So far, we can still see the approximately 10-meter-high historic ...