5801 Valley Cir Set among the trees in Austin's coveted Cat Mountain neighborhood, this architecturally distinctive 3, 920-square-foot residence offers a rare blend of privacy, modern design, Hill Country views, and effortless indoor-outdoor living. Ideally located off RR 2222, northeast of the Colorado River, the home is surrounded by mature oaks and thoughtful landscaping, creating a private hillside retreat in one of Northwest Hills most desirable enclaves. Designed by Merzbau Design Collective / J.C. Schmeil, AIA, and featured on the 2020 AIA Austin Homes Tour, the residence showcases refined modern architecture, walls of glass, expansive decks, a pool, and a seamless connection to its natural surroundings. Updated and meticulously maintained by the same family for nearly two decades, the home offers five bedrooms, four bathrooms, two living areas, and a dedicated private office. The split-level floor plan adds both architectural interest and everyday functionality, with a lower level featuring a spacious bunk room suite and a large office with private exterior access. Inside, dramatic floor-to-ceiling windows frame the trees and views, while oak hardwood floors, high-end windows, stone and siding exterior details, and striking ironwork add warmth, texture, and character throughout. Outside, the professionally landscaped grounds, pool, multiple decks, and private outdoor living spaces create an exceptional setting for entertaining, relaxing, and enjoying Austin's peaceful hillside lifestyle. A rare opportunity in Central Austin offering privacy, views, architectural pedigree, nature, close proximity to downtown, Lake Austin, and The Domain and zoned to Highland Park Elementary and walkable to St. Theresa's Blue Ribbon school.