An iconic architectural treasure nestled on a delightful English courtyard on Blackthorn Alley (NO access via Connecticut Ave). Showcased in the April 1969 issue of House & Garden Magazine, this award-winning Hartman-Cox contemporary is bigger and better than ever thanks to subsequent expansions and renovations. The exterior sawtooth silhouette and rounded turret create the aura of a modern-day castle. Inside, a brick-floored entry hall provides a central hub which skillfully connects the public and private spaces. Boasting soaring and slanted ceilings, geometrically shaped clerestory windows, walls of glass, and oversized skylights, the interior is bathed in natural light. This two-level, 4-bedroom, 4.5-bathroom masterpiece offers more than 3000 finished square feet and is inwardly oriented, encircling a phenomenal 30'x 30' multi-story semi-enclosed courtyard which beautifully expands the living space year-round. Additional interior highlights include an iron spiral staircase, a center island kitchen with original Douglas fir cabinetry, a floor-to-ceiling wood-burning fireplace, a red oak paneled library with built-in bookshelves and a corner mezzanine, a see-through sleeping loft, and a private upper level with balcony access. Outside, the generous .26-acre lot features majestic trees and mature plantings, a greenhouse with decking, a fire pit patio, a lush fenced yard with ample recreation and gardening space, and private driveway parking. Recent exterior improvements include a new GAF Timberline roof and new Boral TruExterior siding. Convenient to downtown Bethesda, the shops at Chevy Chase Lake, several county clubs, and important travel routes, this location is central. Seize this opportunity to own such a rare, architecturally significant gem. **Some photos are virtually-staged**