A true architectural masterpiece, this extraordinary 3.5-acre estate was custom designed & solely owned by a well-known St Louis-based architect, & offers sweeping, unobstructed views of the Meramec River Valley. With over 6,500sqft of total living space, this one-of-a-kind home is designed to showcase the landscape with a dramatic wall of windows that spans the main living areas, flooding the interior with natural light & treetop vistas for miles. Main level features formal dining, sleek modern kitchen, library, powder room, 2-story great room & family room divided by a see-thru fireplace. Private primary suite features vaulted sleeping area with skylight views of the stars & bath with freestanding soaking tub & custom walk-in shower. Discover another vaulted living space with a wall of glass, slate floors & 2nd large fireplace, a wide gallery-style hallway, & a stunning mudroom with circular staircase leading to a flexible upper level. This wing includes a 4th bed (currently used as an office with Murphy bed), full bath, & large-sized vaulted bonus space ready for your vision. Walkout lower level offers recreation space, kitchenette, full bath, & storage with additional laundry hookups. Separate exterior entrance leads to a full apartment with kitchen, living room, bed, bath & laundry. Multiple patios & stone pathways surround the home, creating extensive outdoor living spaces designed for entertaining & enjoying the scenery & breathtaking views.