The Sanctuary, a private enclave in Boca Raton listed by Forbes as one of the most exclusive gated communities in the United States, provides an appropriate setting for this contemporary masterpiece sited on two prized waterfront lots. This 12,000-square-foot estate is cast in elegance, artful accents, and resort-style sophistication. A broad canopy of arching tree branches provides cover leading to a gated courtyard entrance. It's a thread of chic comfort and mesmerizing awe that extends throughout the five-bedroom layout (with 7 1/2 baths). Spaces like the grand entertaining room--with a show-stopping two-story white stone chimney, 25-foot vaulted ceiling and porcelain flooring are inviting and captivating in the same breath. The gourmet chef's kitchen, adjacent to the great room, dazzles