Welcome to Millcreek Farm, located in the heart of the main line on the North side of Bryn Mawr. A beautiful 9400 square foot Fieldstone Farmhouse with 4-car attached garage is nestled on over 13 acres with open meadows, a wandering brook and majestic trees. Situated on a long drive off Williamson Road overlooking panoramic vistas, this exceptional opportunity awaits a fortunate buyer, offered for the first time by the original owner. This prestigious lot can be altered, divided and open to subdivision. Enter into the front to back center hall where the main floor offers a large formal dining room with corner cupboards, beautiful millwork and living room with marble fireplace. Newer chef's kitchen with Brazilian Blue granite counters, two tier island, top of the line stainless steel appliances including conduction range, a Miele steam oven, two traditional ovens, Sub Zero commercial refrigerator and freezer, large ice maker and desk workstation with built-ins. Lovely breakfast area opens with sliders to large vaulted ceiling sunroom overlooking gardens, the Olympic sized swimming pool, pool house with kitchenette, his and hers baths, and tennis court. The library is the heart of the home with exposed beams, wet bar, powder room and floor to ceiling stone fireplace surrounded by built-ins. This terrific space is more than a library and has accommodated many board meetings, and large enough to support the executive buyer's business needs. The present owner built this home for a large family of seven little ones. The second floor is complete with 7 bedrooms and 5 full bathrooms. The master suite features a new dressing room with gorgeous built-ins, new bathroom with radiant heat flooring, whirlpool tub, sauna and additional powder room and walk in closet. All bedrooms have either private bathrooms or have adjacent shared baths. There are two laundry rooms for convenience, one on each level. For the buyer who needs more space, there is a third floor walk up semi-finished room with dormers and a huge basement currently used as a workshop. This beautiful estate is surrounded by preserved open space that one fortunate buyer will be able to call home. A once and a lifetime offer! Please do not enter the property without a confirmed appointment as the driveway triggers an alarm.