I hope whoever was responsible for this carousel installed under a wall was fired, but they should have been forced to remove it first. In a collection of weird construction failures, you know some of them were the result of working around an addition, like cutting a hole in an existing door because moving a door is really hard. Some are due to laziness. Others are just incomprehensible.
At least this one is easily fixed, although it's probably in a hotel, in which case it's a scheme to save on toilet paper. You can see 21 weird construction results at Pleated-Jeans.