Flint is a key feature of Sussex buildings and has been used for centuries and in many different ways. You can see walls made of flint all around Worthing, Brighton and Shoreham-by-Sea, from old cottages and churches to Victorian, Edwardian and even modern houses. Flint walls are made of irregularly-shaped field flints or beach cobbles, which are smaller and smooth, having been eroded by the sea. Flints can be used whole or knapped (snapped open to exposed the shiny grey-black inner surface), and knapped flint is also sometimes cut to create closely-fitting squares. Flints are usually laid with mortar, similar to the way bricks are laid, and the style of the flint arrangements is call bonding: cobbles can be laid in neat rows, chunky field flints can be arranged randomly and squared knapped flint creates patterns.