Welcome to this truly exceptional single family residence offering breathtaking 180-degree panoramic mountain views on an expansive nearly 15,500 square feet lot in one of most desirable neighborhoods in Diamond Bar. Tucked away on a quiet cul-de-sac, southeast faced and surrounded by mature trees and flowers, the expansive grounds provide a serene and private garden retreat, enhanced by concrete stair access and endless possibilities for outdoor entertaining, resort-style living, or future ADU development. The home itself reflects true pride of ownership and a distinguished legacy, previously owned by honored US Air Force pilots, served as the American Volunteer Group (Flying Tigers) during WWII-imbuing the property with timeless character and prestige. Inside, the thoughtfully designed single-family layout offers three bedrooms and two full bathrooms. The beautifully remodeled kitchen showcases quartz countertops, abundant custom cabinetry, and modern LED lighting. The sun-filled living room is anchored by a fireplace and framed by large windows that capture natural light and breathtaking views. The primary suite features a private en-suite bathroom with a walk-in shower, while two additional bedrooms enjoy garden and mountain views, sharing a full bath. Recent upgrades include whole-house repiping, new water heater and new garage door system. An attached two-car garage adds everyday convenience. Residents enjoy a low HOA of $40/month, offering access to community pool, spa, BBQ area, and tennis courts. Ideally located near schools, parks, golf course, shopping and dining, close to 57 and 60 freeways, this home offers privacy, views, and timeless charm, don't miss the opportunity to make it your own.