Hundreds of people watched in suspense on Friday as Freddy Nock walked nearly one kilometre across Lake Zurich on a wire 30 metres above the surface.
Nock set a new world record for a tight-rope walk over open water.
The 900 metre walk took him two hours, because of the wind. On several occasions he had to sit down when the wire swayed too much.
The special wire was fasted to a crane at either end, and stabilised by supporting ropes attached to twelve pontoons. Nock repeatedly had to give instructions to the pontoons to change the position of these ropes.
He performed the feat in order to publicise the fact that the Knie circus, where he will be appearing, is being held in a new location on the opposite side of the lake this year.
Nock, who is 45 and comes from a Swiss circus dynasty, already held five world records. Last month in China he crossed a rope suspended at a record 500 metres above the ground.
swissinfo.ch and agencies