From the manicured lawns of Greenwich to the historic retreats of Litchfield County, Connecticut is known for its genteel country estates that date to the 19th and 20th centuries. Even among these bastions of heritage, however, few private domains can match the singular grandeur of Hillandale.
About 50 miles outside of Manhattan and abutting the pleasantly low-key Rockrimmon Country Club, the epic 270-acre Stamford spread spans a dozen tax parcels that straddle the border…

