Eleven Arches, also known as the Grace Mansion and built for shipping heiress Louise N. Grace, stands as a testament to timeless elegance in Tucson's prestigious Catalina Foothills. This 1936 Josias Joesler masterpiece, meticulously restored over eight years and listed on the National Register of Historic Places, offers an unparalleled living experience across 15,502 square feet for historic grandeur and modern luxury. The main residence, crafted with 24-inch mud adobe walls, features three bedrooms with potential for a fourth, while three versatile guest casitas provide additional accommodations. Light-filled interiors showcase platinum-grade Gypsum plaster walls and exquisite Italian lime-marbled dust plaster in the formal dining room. The estate's grounds span over four acres with breezeways, patios, and lush grounds, presenting panoramic city views, resort-style amenities, and space for grand-scale entertaining. A resort-style pool, art collector-worthy gallery system, and thoughtfully preserved architectural details create an extraordinary sanctuary with prestige and timeless elegance. Property and opportunity details provided by seller or others; buyer to verify.