Gracefully positioned at the end of a private cul-de-sac on 2.12 manicured acres, this exceptional French Country estate with a private guest house and resort-style pool offers timeless elegance along the coveted Great Falls–McLean border within the Langley High School pyramid. Built by Keswick Homes, the residence spans 13,448 square feet and showcases soaring ceilings, Brazilian cherry hardwood floors, exquisite millwork, expansive windows, and a three-level elevator. A long private drive leads to a motor court and porte-cochere, setting the tone for the home's impressive scale and craftsmanship. The chef's kitchen is beautifully appointed with Sub-Zero, Wolf, and Miele appliances, dual islands, custom cabinetry, and seamless flow to the breakfast room and grand great room with a fireplace. Formal living and dining rooms and light-filled gathering spaces create the perfect balance of luxury and livability. The upper-level primary suite offers a private sitting room, fireplace, balcony, dual custom walk-in closets, and a spa-inspired bath. Of the seven total en suite bedrooms, five are found on this second level.  One primary-size suite, an independent wing of three generously proportioned bedrooms, one with a zero-entry shower with bench seating, extra-wide doorways, and wide hallway access to the elevator, ideal for multigenerational living. The expansive lower level features a media room, wet bar, billiards, recreation spaces, flex rooms, and guest accommodations. Outdoor living is truly spectacular with a 20x40 heated saltwater pool, retractable cover, outdoor kitchen with Viking appliances, stone fireplace pavilion, and over 6,000 square feet of Pennsylvania bluestone patios and covered porches. A detached 3,000+ square-foot carriage house includes its own kitchen, family room, two bedrooms, and a commercial-grade gym, creating an ideal guest residence, wellness retreat, or multigenerational living environment. Moments from Tysons, McLean, and Washington, this extraordinary estate offers privacy, scale, and resort-style luxury in one of the region's most prestigious settings.