Listing Description for 137 Old Mill Road Round Hill Private Estate - Gracious 1927 Colonial with high ceilings and exquisite detailing, set on 4 private acres with pool, pool house, tennis court and charming two bedroom cottage. This 10,000 square foot home has extraordinary room scale throughout. Extra height entryway with striking stone floor opens to gorgeous formal rooms. Stepdown paneled living room with fireplace and French doors opens to brick terrace and heated solarium; handsome large dining room with fireplace and extra dining area with stone floor; stepdown library with three exposures, arched windows, stone floor, built-ins and French doors to brick terrace. Large, gourmet eat-in kitchen with adjacent family room contains bay window and terracotta floor. Master bedroom suite includes two fireplaces, sitting room, library with three exposures, built-ins and large dressing room. Two master baths. Five double bedrooms, four additional baths. Mahogany 2nd floor game room and third floor playroom with fireplace. Lower level mirrored exercise room. Six fireplaces. Magnificent home in excellent location.