Welcome to 521 Upper Queen St., one of London's most remarkable homes, set on an impressive 70 x 200 ft lot with views of the 18th green at Highland Country Club. This beautifully updated property blends timeless character with modern functionality, showcasing original hardwood floors, detailed millwork, and heritage charm throughout.The home was expanded in 1976 with an impressive kitchen, dining and family room addition, followed by a second addition in 2021 featuring an oversized attached garage/workshop, bonus bedrooms or offices above the garage, and a gym -ideal for today's modern family! Inside, the main level offers a welcoming living area with a fireplace wall and adjoining den, continue through to the updated Chef's kitchen with abundant cabinetry, oversized island, stainless steel appliances, and wall-to-wall windows overlooking the private, park-like yard. A powder room, laundry room, and large walk-in pantry complete this level.Upstairs features 4 bedrooms and 2 full bathrooms. The primary suite offers cathedral ceilings, expansive backyard views, a walk-in closet, and a 3-piece ensuite. The finished lower level includes a large rec room, two bonus rooms, 3-piece bath, second laundry area, sauna, and a partially finished bedroom with a new egress window (2025), creating excellent potential for multi-generational living or rental income.The oversized attached garage is connected by a bright mudroom hallway with separate entrance. This wing also includes 3 finished rooms ideal for offices, hobby spaces, or guest suites.Outside, enjoy a fully fenced backyard retreat with peaceful golf course views, a brand-new deck (2026), and mature trees including a rare Kentucky Coffee Tree. Conveniently located minutes from Wortley Village, Victoria Hospital, and quick access to Highway 401, this exceptional Highland-area home is truly a rare offering.