This magnificent mansion, on the National Register of Historic Places, has endured for ten decades as an Ohio landmark. The Castle is constructed of Bedford Indiana limestone, 18 inches thick, and features a wrap around porch supported by intricate stone columns. Three turrets give this massive structure its castle-like appearance. Interior design results in elegance and comfort. GreatStone is finished in rare hardwoods from various countries, transported by sailing ships and rail, to their final destination atop a hill in Sidney, Ohio. Overlooking the historic downtown, two acres of lawn, gardens, and 100 year-old oaks greet all who approach by the scenic circular drive.