History of Cobblestones
Cobblestones once served as ballast in ships and were then used to pave many of America's newly established urban streets. Some of these cobblestones were brought on sailing ships from Europe. Other indigenous stones were used as ballast in river barges, providing a way to bring their utility and beauty to the interior of the country's new urban settlements.
Cobblestones, as opposed to their manufactured brick counter parts, are quarried stone.