I’ve found a portal to another dimension in my apartment building: the missing 13th floor.

You scoff. Lots of buildings don’t have 13th floors, you say. Otis Elevator has explained that it’s not a plot, just a preference. “Due to the superstition associated with the number 13, the unlucky number is often omitted from elevator panels and stairwells.”

I say that’s what they want you to think. Or maybe Otis really believes this because the corporation operates exclusively in our quotidian dimension and doesn’t have all the facts.

True, though, it’s not just this building. The “13th” dimension exists as a horizontal layer across the landscape from building to building. It’s vertical, too. Like many buildings, mine has no 13th apartment units. The numbering goes …1410, 1411, 1412, 1414, 1415…

So, what’s in the 13th dimension? It could be a fantasyland with fairies, elves, unicorns, and the like, living and working in apartments, offices, and hotel rooms, possibly rent-free. The dimension could function as time travel, taking us to the year each building was built. It could be the hub for a physical shortcut, letting us jump from a building in Chicago to a building in New York by opening the right door. Or perhaps something nefarious is operating on the 13th floor…

Think about that when you get on an elevator. Better yet, think about that when you get off. Be sure it’s the floor you want. If you’re looking for the 13th floor, come prepared.

Where will it take you?