A rare opportunity to own a truly distinctive corner duplex penthouse in one of the city's most coveted locations. Offering approximately 2,500 square feet, this one-of-a-kind residence features two bedrooms plus a den/sunroom and 2.5 bathrooms, all perched above the Magnificent Mile. Flooded with natural light from dramatic floor-to-ceiling windows, the home showcases sweeping skyline and lake views from nearly every angle. The thoughtfully renovated kitchen is equipped with a Bosch Benchmark induction cooktop and range, while a convenient in-unit laundry closet includes a washer and dryer. A striking wide spiral staircase anchors the space, connecting expansive living and dining areas ideal for both everyday living and entertaining. Primary en-suite bathroom features a massive custom shower with Phillips hue LED lights. Additional highlights include a versatile den or sunroom, abundant closet space, and Lutron lighting throughout, adding both comfort and sophistication. An additional flexible space can be found off the second bedroom- currently used an office, but could easily be converted into a walk-in closet. This special residence was personally constructed for Robert Edelman, the owner/developer of the building, back in 1971. Residents of 100 E Walton enjoy full-service amenities including 24-hour door staff, an attached parking garage, rooftop pool, fitness center, and on-site management.