A rare, once in a lifetime opportunity to own an Original Berkshire Cottage! This spectacular property is situated on a 12-acre campus in Lenox, Overleigh was built in 1903 by Samuel Frothingham. Its history is detailed in the popular coffee table book ''The Berkshire Cottages-A Vanishing Era'', by Carole Owens. This property is located just 1.8 mi. from Downtown Lenox and within minutes to the most popular Berkshire attractions. Designed by Adams and Warren out of NYC and built by Joseph Clifford's Sons, a firm responsible for several cottage era constructions and renovations in Berkshire County. A rare find, this property has deep roots in being used as an academic setting for several diverse private residential schools and has been well maintained throughout the years. All mechanicals and utilities have been upgraded and/or maintained to provide a turn-key opportunity for the next owner. Updates for mandated code compliance include sprinkler systems, fire escapes, smoke/CO, security systems, HVAC, generators and water and septic systems. Despite the property being modified to accommodate Its current use as a residential treatment center the original exterior features have been timelessly preserved to respect the significance the property plays in local history alongside other well-known cottages such as Tanglewood, Wheatleigh, The Mount, Naumkeag, The Red Lion Inn, Elm Court and several other Berkshire estates. The interior of Tetro Hall (Main Building) has maintained much of its original features such as paneled walls, marble fireplaces and wood detailed staircases. It contains 2 commercial kitchens, 3 dining rooms, conference/library room, as well as 8 bathrooms, 20 offices, 4 medical rooms, file room and several common areas. To the rear of this building is a dorm styled building (Dellea Hall) that has 16 bedrooms, 9 bathrooms and 4 laundry rooms. A smaller building to the North (Miller Hall) has another 16 bedrooms, 7 bathrooms, 3 laundry rooms and 1 office. A 12,000 sq.ft. Gymnasium provides and indoor space for athletic activities and is contiguous with 8 offices, 6 bathrooms, 5 classrooms, 8 offices and 2 staff lounges. Also on property is a 2-bay maintenance shop with an office. Ample parking with over 100 parking spaces as well as an in-ground swimming pool and a commercial playground. Property is still an active residential campus. Please do not enter without an appointment.