MARKHAM, Ontario, Sept. 08, 2025 (GLOBE NEWSWIRE) -- Sienna Senior Living Inc. ("Sienna" or the "Company") (TSX: SIA) announced today that it has officially opened its Northern Heights Community, the Company’s first completed long-term care redevelopment project. Northern Heights is a 160-bed long-term care community, replacing 148 older Class C beds. Centrally located in North Bay, Ontario, the thoughtfully designed property overlooks the city and lake, and contributes meaningfully to the rejuvenation of t ...