RI Cemetery Weeks Events The RI Advisory Commission on Historical Cemeteries and the RI Historical Preservation & Heritage Commission present RI Historical Cemeteries Awareness and Preservation Weeks this April and May. Discover Rhode Island’s historic cemeteries and burial grounds through clean-ups, tours, open houses, gravestone conservation workshops, talks, and other programs. All events are free and open to the public. Event listings are listed BY DATE! Check out 100+ programs, with more to be added each week.