Buildings that go over twelve stories skip the number thirteen. Why? Well, it could be because that the Last Supper had thirteen people at the table (Jesus, 11 loyal apostles, and Judas). Or the execution of the Knights Templar on Friday the 13th. Actually, the reason is because of a building in Philadelphia, Pennsylvania. It has only 13 floors.
They say that, if you find it, the owners will actually have you sign a waiver saying they aren't liable if you get maimed, injured, have a mental breakdown, killed, etc. Upon entering, you will have to work your way up to the top floor. Each floor you go up gets scarier than the last.
Many don't make it to the 13th floor. Those that do might get a prize, as small as a full refund to something extravagant, like a week long trip to Disneyland for four! Of course, they just might get trapped on the 13th floor forever. Who knows?
No one knows the exact location of this house, and those who have gone into the house can't or don't want to explain the details of what they endured. If you are able to find this house, and feel brave enough, maybe you can try and concur the the 13 floors.