Let me tell you a story. There was once a house with many doors. It was built of nothing but doors. It had doors for floorboards, doors for windows, doors for tables and doors for chairs. Even teacups were made of doors, with hinges extending in a peculiar way to form the handle. No-one lived in the house, and not many people visited it, for it was strange and located at a considerable distance from the nearby town. But some people did came, out of curiosity or on a dare. When a visitor came, they would knock on whichever of the external doors looked more like a front door to them, and it would open all by itself, letting the guest in. Some would not enter and turn back, but many would come in and then wander around the building and see the few rooms it had.
They would not find adventures inside. No door would turn out to be a portal somewhere else. No ghost would haunt the halls. No treasure would be hidden in the attic. No hooded cultists would perform arcane rituals in the library. The house would creak quietly in the wind, and echo would eagerly snatch the only other sound there, the guest's footsteps.
Sooner or later, the guest would leave. The house would fall silent again. Hours would pass. Finally, coming from deep inside the house, a quiet rustling of a key turning would break the reverie. A bookcase would open, and several hooded figures would enter the library, talking excitedly about the latest research in magical patterns. One of them would run downstairs and fill pet bowls with food. Cats, dogs, rats, rabbits and many many more creatures would start pouring into the building through table legs at the smell of food. Ghosts of cats would appear, meow like soft winter wind, and scratch at the ceiling. Two other hooded figures would go to the basement, pull out tools, cogs, wheels, pipes and small chunks of metal from wine barrels' lids and set to build a mechanical contraption of no practical purpose. Many doors would spring open and show distant lakes, fields, forests, mountains, caves, deserts.
The house would become alive.