Remarkable contemporary residence nestled on 1.63 acres in Cos Cob's Lia Fail Association. Superb renovation by renowned New Canaan architect complements signature modern design and mid-century character. Light-filled interior provides panoramic vistas of sweeping hillside, expansive terraces and Mianus River. Highlights include inviting family room, sumptuous master suite, gourmet kitchen, custom built-ins, original limestone fireplace, walk-in pantry. Versatile fourth bedroom/office with vaulted ceiling. Five central air conditioning zones plus radiant heat in the living/dining rooms and master bedroom. Private 22-acre Lia Fail Association features 12 home enclave enriched by majestic trees, wildflower fields, ponds, and glacial rocks. A tranquil oasis close to all Greenwich amenities.