9. Poveglia Island located in Northern Italy was used as a holding ground or quarantine for people infected by black plague. It happened in the 18th In 1814 the island was closed. It reopened 100 years later to start a mental institution.
The institute ran for 40 years and then it was closed for unknown reasons. This island now is known as one of the most haunted places on earth. There must be a reason that nobody is allowed to enter the island.
10. We kept the best one for last. Area 51 is indeed one of the most forbidden places on earth. A lot of conspiracy theories revolve around Area 51. Some say that is the place for testing airplanes in New Mexico.
The more common theories say that it is the place for testing and experimenting on alien technologies which recovered from a UFO crash site in Roswell, New Mexico. In recent times, some theories also said that aliens and other extraterrestrial creatures live within Area 51.
Liked the story? Leave the comments below.