![A secret door in this built-in white bookcase leads to a hidden bedroom.](https://www.contemporist.com/wp-content/uploads/2016/06/secret-door_260616_01-800x533.jpg)
When home designer’s The Ranch Mine were designing this contemporary home in Phoenix, Arizona, they decided to have a bit of fun.
When walking down the hallway, you’ll see what you think is just a regular built-in bookshelf. But the bookshelf hides a secret. A hidden door is built into the design that leads to a secret bedroom.
![A secret door in this built-in white bookcase in the hallway leads to a hidden bedroom.](https://www.contemporist.com/wp-content/uploads/2016/06/secret-door_260616_02.gif)
Here is a look at part of the floor plan showing the bedroom behind the bookshelf.
![A secret door in this built-in white bookcase leads to a hidden bedroom.](https://www.contemporist.com/wp-content/uploads/2016/06/secret-door_260616_03-800x312.jpg)