Built in 1937 by renowned architect Harold Bissner, 2166 Las Lunas St. is a rare and remarkable gem that masterfully blends the best of architecturally significant design and contemporary luxury. Set back on a quiet, tree-lined street in Pasadena's coveted Casa Grande neighborhood, this stunning Colonial 3 bed/3 bath home + detached 2-room studio is a testament to generations of care and stewardship. The spacious, light-filled living room boasts rich hardwood floors, stylish built-ins, and a fireplace with original 1930s brick facade. Through the interior French doors, find a sunny room with vaulted wood ceilings and access to the back yard, as well as a newly renovated bathroom with floor-to-ceiling penny tile. Enjoy cooking in a designer kitchen featuring Wolf oven/range, Sub-Zero refrigerator, Caesarstone countertops, and Shaw's farmhouse sink, then unwind in a formal dining room appointed by elegant wainscotting and original casement windows with stunning views of the San Gabriels. Off the kitchen, find a massive attached breakfast room with pantry, laundry closet, utility sink - a truly functional and versatile space. Upstairs, find two luxurious bedrooms with ensuite bathrooms, custom cedar-lined closets, dressing areas, and, in the primary bedroom, a clawfoot tub. As functional as it is beautiful, the home boasts dual zone central HVAC, a spacious California basement, Tesla EV charger, and a detached two-car garage with paver driveway and motorized security gate. The back yard is a retreat reminiscent of an English country estate, boasting a gated "secret garden" with raised planters, a tranquil water feature, and lemon, lime, pomegranate, kumquat, and persimmon trees. While away the evening entertaining friends under a covered dining patio with sparkling chandelier and built-in bar/sink/refrigerator. A detached 2-room studio is the perfect guest apartment or home office - or explore turning it into a full ADU! Moments away from shopping, dining, and the Pasadena Farmer's Market, 2166 Las Lunas is a one-of-a-kind home and an opportunity to own part of Pasadena's rich history.