cobblestone

The origin of cobble (as in cobblestone) is uncertain but probably related to cob — a rounded lump or head (as in a corn cob). Cobbling meant assembling rounded stones to make a surface. Cobblestones were naturally rounded by water action in rivers and streams; unlike quarried flagstones, they required no cutting. Gathering them from riverbeds was labor-intensive but the material was free.

Cobblestone paving dates to ancient Mesopotamia and appears throughout the classical world. Roman engineers preferred more regular paving where possible, but cobbling was used for secondary streets and rural roads. Medieval European cities relied heavily on cobblestones: the characteristic street surfaces of Amsterdam, Prague, and Bruges preserve cobblestone paving that dates in some cases to the medieval period.

The cobblestone's disadvantages were real: it was difficult to walk on (especially for women in heeled shoes and horses), uncomfortable in vehicles, and noisy. Macadam surfacing (invented by John Loudon McAdam in the 1820s) — compressed small stones in a road base — began replacing cobblestones in 19th-century Britain. Asphalt replaced macadam from the 1870s onward. Most cobblestone streets in Western Europe were paved over in the 20th century.

The cobblestones that remain are heritage: the Rue de Bac in Paris, the Shambles in York, the Marktplatz in Bruges. The paving stones that protesters pulled from Paris streets in May 1968 — 'sous les pavés, la plage' (under the paving stones, the beach) — were cobblestones. The revolutionary slogan made the rounded river stone a symbol of concealed freedom.