Forbidden City, Beijing, China Located in the center of Beijing, the Forbidden City was the imperial palace of China's emperors for five centuries and is one of the most beautifully preserved examples of ancient Chinese architecture.
You can go anywhere else in the world but not on these forbidden places.
The largest royal garden in the world, The Summer Palace of Empress Dowager Cixi, Beijing, China
Area 51 is a military base in Nevada, which is primarily used for aircraft and weapon experiments. Despite mentioning in passing by a couple presidents, the U.S. Government still doesn’t officially recognize it today.s