#10 Area 51, Nevada
The USA’s answer to the Bermuda Triangle.
Area 51 is cloaked in mystery. This top secret US military site is located deep within the Nevada desert and is literally impenetrable. The reason for this? Nobody knows!
Some say it could be because the government is attempting to hide alien technology or high-tech aircraft that have never been seen before. However, these are just conspiracy theories, but what we do know is that it is completely hidden from public view.