tourism is also an important economic activity in this region. many tourists visit the d-day invasion beaches, including utah beach in the cotentin. at sainte-mère-église a few miles away from the beach, there is a museum commemorating the action of the 82nd airborne division and 101st airborne division. the "cité de la mer" in cherbourg is a museum of oceanic and underseas subjects. the main attraction is "redoutable", the first french nuclear submarine, launched in 1967.