|Leaning Tower of Mattresses|
|Location||Leaning Tower of Mattresses|
|First appearance||"The Rock of Sages"|
The Leaning Tower of Mattresses is a location and one of the seven corners in "The Rock of Sages." It is where Sleepy finds the blue gem of the Rock of Sages. He goes to sleep at the top of the mattress pile during the mission; however, he wakes up feeling uncomfortable and begin removing various objects under the mattress until he has the gem.
Surrounded by hills, the location has mattresses piling towards the sky surrounded by sheep (a reference to a myth that counting sheep will help a person fall asleep).
Another reference is the way that Sleepy finds the gem, similar to the fairy tale of The Princess and the Pea.