Spacescene

Spacescene is an unused area in Super Mario 64 located within the Third Floor of Peach's Castle.

Appearance
Spacescene takes the form of an invisible cube with a semi-circular stone object near one of the walls. The skybox takes the form of a rotating stock photo of space, which is anomalous in and of itself, as there are no other rotating skyboxes within Super Mario 64. There is an anomalous and unknown source of lighting within the level, as no shadows are present and all objects are rendered in maximum light.

Entrance
Spacescene is entered through clipping through the walls in the Third Floor through unknown means. The clipping typically occurs in a cutscene, where the player cannot be controlled. It is unknown what triggers this cutscene, but it correlates to a removal of all stars from the save file.

Trivia

 * The Spacescene area is commonly associated with the Eternal Fort, and it is theorized that the Spacescene is an entrance to the fort.