Imagine waking up to a wall of glass overlooking Lake Travis, sunlight shining on hand-laid stone floors, and the quiet stillness of 1.31 private acres. 12600 Lyndon Dr is a European-villa retreat sculpted into the hillside - masterfully secluded with some of Austin's most coveted Lake Travis views, yet effortlessly connected to the city's most exceptional schools, exclusive country clubs, and renowned golf courses. Inside, a dramatic rotunda with hand-painted ceilings and mosaic tile sets a stunning first impression, while vaulted ceilings, heavy beams, and rich stonework create elegant interiors. Two living rooms offer floor-to-ceiling windows framing panoramic lake and hill views. One centers around a cozy fireplace; the other opens to the updated chef's kitchen with top-tier appliances. The formal dining room is ideal for entertaining, and the dedicated office - with wet bar and gas fireplace - offers a polished setting for work or winding down. The primary suite is a true sanctuary with endless lake views, a sitting area with fireplace, and a spa-style bath with soaking tub, dual vanities, walk-in shower, and dual closets. Upstairs, each bedroom has an ensuite bath, including one with its own kitchen and entrance - perfect for an au pair, guests or multigenerational living. Another bedroom includes a private balcony overlooking the lake. Outdoor living is unforgettable with terraced decks, a waterfall spilling into a resort-style saltwater pool with grotto and swim-up bar, plus a full outdoor kitchen and cabana with bath and shower. Additional features include a 3-car garage, solar-tinted windows and a 100-year tile roof, and updates such as a new retention wall, improved drainage, and fencing. Located in the ETJ with no city permitting required, the property offers room to customize - from a wine cellar to an elevator or guest-house conversion. 12600 Lyndon Dr is a rare retreat designed for extraordinary views and exceptional living.