Is the Great Wall of China haunted?

Yes

Explanation:

One of the most well-known landmarks in the world, visited by more than 10 million visitors each year, the Great Wall of China is considered by some to be among the most haunted. Upwards of two million workers lost their lives building the wall and some tourists have said they’ve seen ghosts walking along the wall, even hearing marching footsteps. Others have experienced sudden headaches and nausea at the Great Wall.