African American blue collar worker repairing and replace cobblestones on city street after underground repairs.
Cobblestone is a natural building material based on cobble-sized stones, and is used for pavement roads, streets, and buildings. Cobblestones were largely replaced by quarried granite setts. Setts were relatively even and roughly rectangular stones that were laid in regular patterns.
There are not many of the older such streets left because theyhave been paved over with asphalt.