The City of Quincy, Massachusetts, is inviting residents and visitors to “save the date” for Quincy’s Open Heritage Day, a free, citywide celebration of local history happening Saturday, September 26th, from 10:00 AM to 4:00 PM. According to the City of Quincy, the event will open the doors to Quincy’s historic properties for a day of free tours, activities, special programming, and self-guided experiences at sites across the city, making it easy for people to explore Quincy’s story in a hands-on way.…