cobblestone

thumb|Cobblestones on a road surface in Imola, Italy thumb|upright|Sett (paving)|Sett-paving, such as this surface in [[Fulham, south-west London, is also often referred to as "cobblestones".]]

Cobblestone is a natural building material based on cobble-sized stones, and is used for pavement roads, streets, and buildings. Setts, also called Belgian blocks, are often referred to as "cobbles", although a sett is distinct from a cobblestone by being quarried and shaped into a regular form, while cobblestones are naturally occurring rounded forms less uniform in size.