I'm always amused and fascinated by obscure signage, especially the ones that try to convey a message without using any words. This one really takes the cake! I found it on Flickr:
"A sign for ghosts outside Niedzica Castle, Poland... The ghost, known as the "White Lady", is the ghost of Umina, from the Inca's royal family, married to Sebastian Brezevichy, one of the previous owners of the castle. Umina was murdered in front of the castle from a treasure hunter who wanted to find the Inca's treasure that, according to the tradition, brought with her from South America. Her father hid the treasure and made a cryptic document which, till now, nobody can interpret it."