If one was able to explore it, would they find alien technology? What about highly experimental aircrafts? Theories abound…

#3 The Queen of England’s Bedroom 

You wouldn’t want anyone snooping through your bedroom, so this one is pretty understandable. The Queen of England’s bedroom is located in Buckingham Palace and is heavily guarded. When a man named Michael Fagan broke into the bedroom in 1982, it was considered to be one of the biggest royal security breaches.