Fonthill Castle, Doylestown, Pennsylvania
A poured-concrete castle in the Philadelphia 'burbs is certainly odd, but odder still are the rumored hauntings at Fonthill: It has been said that the ghost of a housekeeper still wanders the estate. For more earthly visitors, Fonthill, now part of the Mercer Museum, welcomes guests to peruse its former owner's elaborate collection of art and artifacts.
