Gravenhurst returns to Doors Open Ontario on Saturday, September 20, 2025, offering free access to 10 heritage sites across the “Gateway to Muskoka.” Families can enjoy tours, hands-on activities, and lakeside adventures at landmarks like the Opera House, Gull Lake Rotary Park, and Muskoka Wharf.
This fall, Doors Open London invites visitors to explore 40 diverse sites across the city. From museums and historic estates to dance workshops, pop-up theatricals, and musical performances, the “Sights, Sounds & Stories” theme celebrates London’s heritage and its distinction as Canada’s only UNESCO City of Music.