Imagine someone doing this in the past without knowledge of what they were doing then being accused of witchcraftThis.
These places are all over. They take some spot where there's a slope and the trees are uniformly tilted (due to the soil shifting downslope in the past during minor landslides) and then build a tilted house on it. Because the building is built on a slope and the trees are all tilted, it's hard to tell from outside that the house is tilted too. And once you're inside "down" is not in the same direction as the floor of the house. Add in other optical illusions inside and it's easy to fukk with people who want to be fooled.
Here's a scientific paper on one of the similar spots where they break down how each illusion works:
The Mystery Spot Illusion and Its Relation to Other Visual Illusions on JSTOR
https://journals.sagepub.com/doi/abs/10.1111/1467-9280.00196