Coolham is a small hamlet located approximately 8 miles southwest of Horsham on the A272 between Buck Barn and Billingshurst.
During the Second World War, the Royal Air Force constructed an airfield at Coolham to support the D-Day landings. RAF Coolham was decommissioned shortly after the war, but a monument and several name plaques remain to commemorate those who lost their lives while serving at Coolham.