Welcome to ''El Castillo'', an architectural masterpiece designed by the renowned Josias Joesler, nestled in the prestigious Catalina Foothills. This privately gated, hilltop estate blends timeless elegance with modern comfort, offering nearly 5,000 square feet of luxurious living space. The main residence features three bedrooms and two and a half baths, complete with an updated gourmet kitchen and beautifully renovated bathrooms. In addition to the main house, the property includes an attached casita with a private ensuite bath, providing the perfect space for guests. There is also a fully remodeled, detached two-room guesthouse equipped with a kitchenette and full bath, offering visitors the finest in comfort and privacy. A heated and cooled office, exercise room, or art studio gives you a flexible space for work or leisure. Outside, the estate is surrounded by expansive, manicured gardens with desert landscaping and four tranquil fountains that add to the serene ambiance. Multiple patios are designed for year-round enjoyment, offering breathtaking views of the mountains and city lights. The highlight of the outdoor space is the over 1,100-square-foot ramada, complete with a fireplace, large dining and living areas, and a full outdoor kitchen with multiple cooking stations, including a built-in pizza oven. The resort-style pool has been recently refinished with Pebble-Tec, new tile, and upgraded equipment, including a hybrid electric and gas heater. The estate has undergone many modern updates, including a new septic system, new water lines, and an upgraded electrical service that has been enhanced from 200 to 400 amps. The oversized three-car garage provides ample storage space. Set in a magical and private location, El Castillo offers a rare combination of historic charm, modern amenities, and spectacular views. This luxurious estate is an extraordinary opportunity to experience the best of Tucson living.