PH-ONE is where every sunrise, skyline, and season unfolds in complete privacy. Over 8,300 sq ft across five levels includes a full-floor primary suite and a private-entry guest suite, crafted with imported woods, heated Italian marble, and a 21-ft onyx wall. Two chef kitchens, an executive office, a lounge, and a spa steam room elevate the experience. A private elevator on all levels and a 10,000 sq ft terrace with 360° views define this rare waterfront penthouse. Full details & photos available by request. Visit www.lheritageduvieuxport.com

PH-ONE is a prestigious architectural statement rising above the Saint-Lawrence River. This residence redefines urban luxury with over 8,300 sq ft of elegantly crafted interior space and an additional 10,000 sq ft of exclusive terrace to the penthouse. Accessible by a private elevator serving every level, PH-ONE was conceived to unite art, architecture, and innovation. Heated Italian marble floors extend through all chef's kitchens and spa-inspired bathrooms, complemented by imported walnut, rosewood, and cumaru finishes -- every surface designed for elegance and longevity. A 41 ft backlit onyx wall rises dramatically through the center of the home, creating a continuous sculptural statement. The main floor is designed for entertaining, featuring a bright open-concept living area and one chef's kitchen equipped with professional-grade integrated appliances. A guest suite with its own separate entrance provides ideal accommodation for visitors or staff. Floor-to-ceiling windows frame the river, while seamless lighting, sound, and climate are managed through a full smart-home and entertainment system. Each room is equipped with a wet bar, coffee station, and fireplace, balancing convenience and quiet luxury. The upper levels include two secluded family suites, each with its own spa-designed ensuite and panoramic views. The primary suite spans over 1,000 sq ft, occupying an entire floor with his-and-hers walk-in closets, a private spa bathroom, and a staircase ascending to the executive office and lounge in the sky -- a haven of prestige, privacy, and discretion above the city. The crown jewel is PH-ONE's 10,000 sq ft exclusive waterfront terrace - the largest in Old Montreal. Designed for all-season enjoyment, it features heated pathways, an outdoor spa, two water features, two fire pits, five distinct lounge and dining areas, and refined lighting that reveals 360° views of Montreal's most iconic landmarks -- from the river and bridges to the heritage skyline. Constructed with multi-million-dollar renovations and imported materials from Europe and South America, PH-ONE combines technology, architecture, and design into one exceptional private world - a rare opportunity to own the most prestigious penthouse in Montreal's history. Heritage building offers 24-hour security personnel, over 12 amenities including waterfront gym, pool, spa, reception room, wine cellar, tasting room, billiards room and hotel guest suite. Access to a private tunnel to avoid traffic and Old Montreal special memberships.