Runners climb the ramp during the Vortex Race, created by students inside the Vortex, an eight-storey circular building with a 2.8-kilometre helicoidal ramp with a 1% incline housing 941 rooms for the University of Lausanne, in Chavannes-près-Renens, Switzerland, on October 16, 2025. (Photo by Stefan Wermuth/Reuters)
