Hidden Doors and Secret Passageways are always a cool amenity to any house. Not only does provide mystery to your living quarters, but it also allows for a bit of privacy. Hidden doors and secret passageways seem to be a popular room addition since there are numerous home security companies on the web who specialize in such requests, like The Hidden Door Company, Creative Home Engineering and Hide A Door. Of course, you can easily get the typical hidden door in a bookcase, but we’ve found some pretty interesting ones below!

20. Mirror Secret Door

This one is crazy! It looks like a regular wall-mounted mirror, but it slides open to reveal a whole other room!

19. Faux Book Case

Just because it looks like a dead end doesn’t always mean there’s nothing behind it…

18. Hidden Mirror Vault

This is the best place to keep that stack of cash or gold bars you don’t want the Uncle Sam to get their hands on! Oh, and you can easily use it to partake in your beauty!

17. Anne Frank’s Hidden Bookcase

This is one of the most famous hidden doors in history (at least to us). Anne Frank and her family were able to hide from Nazis during WWII for up to two years due to a hidden apartment behind a bookcase. This secret back door is one of the most monumental in our history.

16. Bookcase Hidden Door

Although it’s not as original as some of the other hidden doors, it still pretty cool since it looks like a real bookcase that holds all sorts of random crap, but opens to a room. The above picture is one girl’s secret study room.

15. Staircase Hidden Door

A hidden room under a set of stairs is definitely an unusual idea. The above photo is of a staircase that rises to reveal a hidden room.

14. Under the Stairs Hidden Door

Here’s another hidden room under a staircase but instead of rising up to reveal the room, it opens like a regular door to reveal a hidden area.

13. Pool Room Hidden Door

This is seriously something out of the game Clue! Now, we just have to figure out who the murderer is and what weapons they used…

12. Secret Wall Door

The best hidden doors aren’t even there to the naked eye, just like this one that looks like it’s part of the wall, but opens to what seems like a rest room.

11. Under a Mat Hidden Cellar

The Spiral Cellars design firm have built a hidden win cellar under a mat, complete with a spiral staircase that goes underground.

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