Rare opportunity to own one of the last remaining historic Yerkes Observatory homes, close from Geneva Lake, the shore path, and downtown Williams Bay. Renovated to bring it into the modern era while preserving stained glass, rich woodwork, and original detail–offering character, space, and a layout that actually works. Nearly 3,000 sq ft with 4 bedrooms, 3 full baths (one on each level), multiple living areas, a sun-filled sunroom, updated kitchen, and finished lower-level entertainment space. 3.5 car garage for vehicles, storage, and recreation. Tree-lined yard with deck, fire pit, hammock, and front porch. Close to Geneva Lake, schools, dining, and shops. Williams Bay offers a quieter small-town setting, minutes from Lake Geneva. Proven rental income; offered furnished.