TreeAlive maps family trees. When a visitor's ancestors lived in Rhode Island, the markers standing near those places surface automatically alongside their family's journey:
Whitehall · near where a family lived in Middletown in the 1700s · built in 1729 by George Berkeley, Dean of Derry, and his home from 1726 to 1731
A marker stops being a roadside plaque and becomes a destination with a personal reason to visit. Open the live demo tree, choose the Crossings tab, and turn on Historical Markers to see the experience working (the demo family’s markers are in Pennsylvania; a Rhode Island family sees Rhode Island’s).