Saint-Idesbald is a hamlet, part of Koksijde, which also includes Oostduinkerke. Its name refers to Idesbald, a 12th century abbot of the Abbey of Ten Duinen.
In 1931, George Grard set up his studio at Saint-Idesbald, where his house became a rendez-vous of artists including Pierre Caille, the Haesaerts brothers, Edgard Tytgat and Paul Delvaux.
In 1982 the Paul Delvaux Museum opened in Saint-Idesbald.
