Does the 72 hours visa (Beijing) valid for a trip to the Great Wall?

Jakab, this is in reality 144 hour visa free transit (72 hours visa free transit in Beijing has been replaced by 144 hour visa free transit a couple of years ago) and this is also not a visa, but a right to travel without a visa.

By the way, you are definitely allowed to travel to quite a vast area that comprises the entire Beijing City, Tianjin City and entire Hebei province. The area twice larger than Hungary :) Also, you are definitely allowed to travel to the Great Wall.

Only one more question: is there a special row at beijing Airport for those who need this kind of visa. Yes, I know it is not a real visa. :)