Experience Luxury In Your Promontory Mountain Estate- Golf Membership Available - Welcome to the best address in Park City. Welcome to Pinnacle at Promontory. Set apart not only by private gates and striking geography, perched upon a knoll surrounded by golf and breathtaking views of Park City's famed ski slopes, but also set apart by design. This is the unique opportunity to build a true legacy home in a private enclave within arguably the most amenity-rich community in America, Promontory.