Cursed Doors

Cursed Doors are a type of door in Gravity Falls, Oregon.

History
Some point before the events of the series, the author of Journal 3 came across and studied the creatures, recording their powers and appearance in said book.

In "Tourist Trapped," their entry in Journal 3 appears alongside various others as Dipper Pines flips through the pages of the journal.

In Rumble's Revenge, 13 Main Street, is a known cursed door that appears in the final level of the game. Dipper and Mabel use a cursed door in PinesQuest to begin the game.

Appearance
On the outside, they look like any other door. However, once opened, it is revealed that they emit light and have faces.