While we're on the subject of treasure found inside houses, let us tell you the story of one couple in Greenwich, UK, who probably would have preferred the $50k. What they found in the walls of their house was a bottle of nail clippings, hair, and urine, all tied together by a leather heart pierced by a nail. Is that creepy or is that creepy?
As researchers discovered, the bottle actually dated to the 17th century, and was a kind of talisman known as a "witch bottle". Basically, you jam a whole bunch of body waste in a bottle and put it behind a wall, and voila! Whatever curse you had is lifted. Apparently the urine was found to contain traces of nicotine, so whoever made the bottle must have been really stressed out about that curse.