Wanting to explore prohibited areas is human nature, so a closed door incites a lot of curiosity and urge to explore what is behind the door. Mystery shrouds such locked locations as the most compelling reason to lock a location and keep it secluded from public access is something precious, priceless, exceptional, or mysterious is behind the door.
The custodians of such location usually prefer leaving such locked mysteries unresolved.
Here are five of the most intriguing and mysterious closed doors in the world that are likely to remain unopened.
