A FORMER BENEDICTINE MONASTERY, magnificent Quinta de Cabanas is a sentinel among mature woodlands completely sequestered in privacy. Originating in the 12th century, restored in 1720, and lovingly embraced ever since by owners that include aristocracy, literati, and diplomats, the estate lies near the coast north of Viana do Castelo. Serenity-including a soothing courtyard fountain, cloister, chapel, and over-sized fireplaces-defines the interior spaces of the beautifully maintained main residence. Drama also reigns within a dining room boasting vaulted stone ceilings and a spectacular fireplace, and in living areas of radiant white that serve as the perfect backdrop for showcasing fine art and sculpture. Extensive grounds feature a two-suite guesthouse, gardens and lawns, woodland, vineyards, and a private trout stream flanked by ancient oaks.