Welcome to the iconic William Thoburn House, a heritage-designated stone home by architect M.B. Aylesworth, on a picturesque nearly 1AC lot, steps from the Mississippi River. With 4685 sqft of above-ground living space (per MPAC), this home offers a rare blend of grandeur & enduring craftsmanship. Meticulously restored & carefully modernized, it is fully prepared to welcome its next family. Soaring ceilings, rich HW floors & intricate original details including crown mouldings, decorative trim & restored stained-glass window (2025) & a sweeping period staircase w/ exquisite millwork anchors the dramatic foyer. The 11ft ceilings continue through the great rm, living rm & dining rm. The great rm features a bay window, ornamental ceiling medallions, pocket doors & an elegant fireplace w/ intricate mantel. The kitchen features w/ tongue-and-groove cabinetry, detailed farmhouse-style sink, Thermador gas range, new fridge & dishwasher & a tucked-away butler's pantry. A mudrm w/ heated floors, floor-to-ceiling cabinetry & inside access to the double garage. Upstairs, the primary suite offers a large bay window, ample closet space, 10ft ceilings & an updated ensuite w/glass walk-in shower. The 10ft ceiling secondary bdrm features an arched window w/ Juliette balcony, crown moulding, hearth detail, walk-in closet. A generous third bdrm, period-inspired main bath w/ clawfoot tub, heated floors & a dedicated home office w/ 9ft ceilings complete the level, along w/ convenient second-floor laundry. The third-floor loft showcases exposed brick & includes 4th & 5th bdrms, the latter w/ its own ensuite. An oversized garage includes unfinished loft space, perfect for a home gym, featuring an arched window. The private backyard retreat offers a deck, stone patio, gazebo, mature hedges, curated gardens & professionally landscaped grounds. Walk to shops, restaurants, parks, schools & amenities. A rare opportunity to own a truly one-of-a-kind historic estate. 24 hrs irrev on all offers. (id:60457) Location - Cross Streets: March Rd., (Turns into Ottawa St.) & Martin St. N. ** Directions: 417 W to Arnprior, Take exit 155 for Ottawa Regional Rd 49/Ch. March/March Rd., Left onto March Rd., At the roundabout, take the 2nd exit onto Ottawa St., Continue on Martin St N/County Rd 17. Drive to Union St N.