A rare find, this magnificent 3 courses of brick Colonial built in 1856 offers unparalleled elegance, character, and space in the heart of Princeton. Positioned directly on Nassau Street, this distinguished residence places every convenience, cultural amenity, and top-tier dining at your doorstep. The gracious first floor unfolds across multiple formal living areas, a sun-filled formal dining room, a wood-burning fireplace, and a beautifully renovated kitchen - a seamless blend of historic charm and modern comfort. Upstairs, five generously sized bedrooms and four-and-a-half bathrooms offer exceptional flexibility for family living and hosting. A standout feature of this storied property is the private side apartment, complete with its own separate entrance, full kitchen, living space, and bathroom - ideal as an income-generating rental, a private retreat for teenagers, or elegant accommodations for long-term guests. A lush, serene backyard and a coveted three-car garage complete this truly one-of-a-kind Princeton offering. Properties of this caliber - combining historic provenance, prime location, and versatile living - rarely come to market.