The EUROPA company has built a 31.50m x 15.35m retractable roof for the swimming pool at the Trois-Lacs campsite in Sugiez.
The elements for this roof were transported by helicopter. It took 17 rotations to transport the 15.35m x 2.15m elements, the heaviest of which weighed up to 890kg.
The whole thing was transported in less than a day.