Belhurst Castle is a former private residence on the shores of Seneca Lake in Geneva, New York. It was designed by noted architects Fuller & Wheeler and built between 1888 and 1892. The three-story, nine bay wide Romanesque Revival style mansion is constructed of Medina sandstone. It has a slate gable roof, one-story solarium, and four rectangular stone chimneys. It features projecting porches, bays, towers with conical and pyramidal roofs, eyebrow windows, and a porte cochere with Syrian arch. It was listed on the National Register of Historic Places in 1987.