The tower!

[Dragonwolf73]

Floor 5892 contains an extra floor so we can forget about the last few floors.

 

[TetrahedronDash]

Floor 5893 contains a bustling replica of the same SugarCube Corner from Equestria, with Ponies, humans, and other creatures gathering up at the reception counter to buy some sweets, seeming as a checkpoint/break area in the Tower.

 

[Dragonwolf73]

Floor 5894 is a small bunker where Karl Marx, Friedrich Engels, Joseph Stalin, Vladimir Lenin, Che Guevara, and Mao Zedong are all taking part in a game show hosted by the members of Monty Python.

 

[6FootDeep]

Floor 5895 is full of amnestic injections and sleeping pills so you can either live with the thought of the last floor or wake up clueless again.

 

[Dragonwolf73]

Floor 5896 contains a perfect replica of the USS Kitty Hawk, with it being in the exact condition the last person to enter the room wants it in. Such as complete with a crew and aircraft, or sitting as a museum ship.

 

[Ivyss]

Floor 5897 is made of bread.