Cities

According to the text of The Secret, each of the twelve treasure casques was buried in a North American city. These cities are not explicitly stated; their identities are elements to be deciphered as part of the twelve treasure hunts.

Found casques have decisively identified Chicago, Cleveland, and Boston as three of these cities. The identity of the other nine cities remains under dispute, but a consensus has emerged (seemingly confirmed by the Gift Giver). These are typically referred to as the Generally Accepted Cities.