Historic Gleneagles, famed for its golf course and gentlemen's club aura, has rounded out its appeal with the addition of an ultraluxe spa. In the reception room, Cubist art hangs on burnished walls and a perfect orchid perches on each side table. From there, you pass through luxurious changing rooms with Art Deco-style lighting into an otherworldly aquatic realm. In the mosaic-walled his-and-hers "heat suites," follow a bout of relaxation in the crystal steam room with invigorating spritzes in the showers, culminating with a cooldown in peppermint-scented arctic mist and a pummeling by water jets in the dark-blue-tiled hydrotherapy pool. The Gleneagles Retreat package bundles the spa's watery offerings with a welcome foot massage, a cleansing back exfoliation, an aromatic massage, a facial, a scalp massage, and a delicious two-course spa lunch.