Tournebu () is a former commune in the Calvados department in the Normandy region in northwestern France. On 1 January 2019, it was merged into the new commune of Cesny-les-Sources. Population Sights Donjon (the keep) See also Communes of the Calvados department References Former communes of Calvados (department) Calvados communes articles needing translation from French Wikipedia Populated places disestablished in 2019