Arromanches-les-Bains (or simply Arromanches) is a commune in the Calvados department in the Normandie region of northwestern France.  

Arromanches is remembered as a historic place and in the heart of the area where the Normandy landings took place on D-Day, 6 June 1944 and in particular as the place where a Mulberry harbour artificial port was installed. This artificial port allowed the disembarkation of 9,000 tons of material per day. 

It was on the beach of Arromanches that, during the Invasion of Normandy immediately after D-Day, the Allies established an artificial temporary harbor to allow the unloading of heavy equipment without waiting for the conquest of deep water ports such as Le Havre or Cherbourg. Although at the center of the Gold Beach landing zone, Arromanches was spared the brunt of the fighting on D-Day so the installation and operation of the port could proceed as quickly as possible without damaging the beach and destroying surrounding lines of communication. 

Today, Arromanches is mainly a tourist town. Situated in a good location for visiting all of the battle sites and war cemeteries, there is also a museum at Arromanches with information about Operation Overlord and in particular, the Mulberry harbors.