Photo from listing.A castle can be found in the small town of Cornwall, Connecticut! Set amongst 275 acres of woodland and streams, with several outbuildings on the property, this whimsical castle looks like it was dropped here from Cornwall, England, but it actually dates to the 1920s. Hidden Valley Castle, had its beginnings when socialite Charlotte Bronson Hunnewell Martin envisioned building a unique country retreat for herself and her husband, Dr. Walton Martin, in the Litchfield Hills of Connecticut as a summer retreat. Just before this, Charlotte had bought a group of 20 brownstones in Manhattan on 48th and 49th Streets, between Second and Third Avenues, and converted them into charming townhouses around a central Italian-inspired garden. Called Turtle Bay Gardens, the houses were highly acclaimed and almost immediately attracted prominent and celebrated residents. The Cornwall Castle was designed by architect, Edward Clarence Dean, who also redesigned the Turtle Bay Gardens for the couple. Dr. Martin imported many of the materials as well as the 100 workmen required to build the castle, a project that lasted five years. Charlotte would also have a cottage built on the estate and hired young Italian artist, Vincenzo Rondinone, to be her resident artist on the estate to create unique vases, bowls, and pots to be used at the house and to be given as gifts to visitors and friends. The property was restored in recent years and put up for sale, with the cottage sold as a separate dwelling.