The beautiful Fairy Castle of Princess Callia, favored daughter of deranged Emperor Sentatian.
It is a box of fairly standard children’s toys. There are dolls, blocks, carved knights and animals. Everyone will think, “Oh I had one of those when I was young.”
The PCs encounter a strange set of artistic drawings done on the ground as they pass through a city. It has been done in chalks and no one saw who did it. Wizards might recognize the writing within the colored square as an obscure and dead language with a message stating that a prominent wizard and a retired bard have discovered how to populate Arcadia with the spirits of the dead!
Is it a local hoax, or are the PCs crossing the path of a very deranged and possibly dangerous mage?