A private, mountain sanctuary just minutes from Downtown Boulder and Pearl Street! The Ponderosa Mountain Estate offers rare architectural pedigree on a 10.6-acre level lot with expansive mountain views! Designed by renowned architect Hobart D. Wagener, this exceptional property features an elegant main residence, a private guest apartment, and lush landscaping. The estate embodies a seamless indoor-outdoor lifestyle, ideal for relaxation and entertaining, with immediate access to world-class outdoor adventures including hiking, biking and skiing. The 7,016 square-foot main residence is bathed in natural light, featuring Brazilian cherry hardwood and stone flooring, and redwood cedar ceilings with skylights. The vast great room is perfect for relaxation, with multiple fireplaces and bespoke cabinetry. Enjoy the gourmet kitchen with custom cabinetry, soapstone counters, and top-tier appliances like a Wolf range and Sub-Zero refrigerator. Adjacent spaces include a kitchen lounge, a cozy library, and an inspiring art studio. The lower level hosts a home theater, snack bar, garden-level office/bedrooms, and a massive laundry room. The main-floor owner's suite offers a private sitting room, wood-burning stove, and a luxurious spa bathroom. Additional accommodations include secondary bedrooms and a garage guest apartment with a chef's kitchen and home gym. Situated on a prime hilltop lot, the estate enjoys breathtaking views and year-round sunshine. The outdoor amenities rival a private resort, with an oversized, heated swimming pool, sauna and private hiking/biking trails winding through the property. The estate offers extensive infrastructure with two water sources (Pine Brook Hills water and a private well)-a rare and valuable asset-along with advanced home automation and security systems for exceptional comfort and reliability. Experience iconic mountain living in this exceptional Boulder retreat.