"Hartdale" is an exquisite, 9,388 SF Colonial Revival mansion built in 1895 and showcasing outstanding, old-world craftsmanship. The first owner, Seldon Twitchell, was in the bottling business and invented a new way to keep fizzy drinks fresh. His wealth enabled him to build this southern-facing, grand residence atop a knoll. Beautifully maintained, Hartdale's architectural details are delightful, with rich millwork, plaster moldings and carved marble and wood fireplace surrounds; Limestone, oak and parquet floors; Big, broad sash windows for sunny interiors and multiple sets of French doors opening to a gracious, full-length rear terrace overlooking the pool and gardens beyond. The wide center hall was designed to receive guests in style, and the floor plan flows easily from large formal rooms to a conservatory with arched windows on three sides to a fully paneled, cozy library. The formal living room is paneled in wood originally used in the interior of an 18th-century German castle. Note the exquisite plaster detailing on the dining room ceiling. The Siematic kitchen is outfitted with top-quality appliances for caterer or home chef. A gorgeous main stairwell leads to private quarters. The 2nd floor includes master suite with large marble bath, 3 good-sized bedrooms and 3 full baths, and laundry room. 3rd floor includes two bedrooms and two baths. An exercise room and pool house with access outside to the pool are finished areas of the lower level. The grounds are dotted with majestic trees and well-designed plantings. The placement of the pool works perfectly with the terraced grounds below. An outstanding Main Line residence with character to spare all in a very manageable size and floor plan!***Taxes are in the process of being reduced