Set high above West Road on nearly five sunlit acres, the Leuthold House embraces south and west light and looks out over its own spring-fed pond from every room. Allan Gelbin, the Frank Lloyd Wright apprentice who supervised the building of Tirranna, designed it in 1966 with an unlimited budget and considered it his finest work. Offered for the first time in 29 years. A long curve of glass, white plaster and mahogany follows the land beneath deep overhangs and two planted green roofs. Life flows easily inside and out. The generous living room, with clerestory windows, fireplace and wet bar, opens through walls of glass to the terrace and a pool that traces the curve of the house. The dining room opens to the kitchen and its curved breakfast nook, or closes off for formal evenings. The first-floor primary suite spans its own wing with dressing room, two mahogany closets, spa bath and a private terrace with the best view in the house. Upstairs, four bedrooms and three baths open to a roof terrace. The office hides its files behind a disappearing mahogany wall and steps out to a private garden. Gelbin's teak and mahogany millwork runs throughout. A covered breezeway connects the private guest house with bedroom, bath, kitchenette and living area. 150 specimen trees, gardens and landscape lighting. Restored by Hobbs Inc. and JMK Architects with geothermal radiant heat and cooling. Cover of Connecticut Cottages & Gardens. Architecturally important and completely livable.