 The massive sets designed by Ken Adam were the largest ever constructed in France and required more than 222,000 man-hours to construct (roughly 1000 hours by each of the crew on average).They were shot at three of France's largest film studios in Épinay and Boulogne-Billancourt.The 220 technicians used 100 tonnes of metal, two tonnes of nails and 10,000 board feet of wood to build the three-story space station set at Épinay Studios.