Tour de France fever has taken over at The University of Sheffield - which staged this stunt of a giant bicycle on a city hillside.
The chalk-like artwork depicted the Krebs Cycle, the process by which the human body generates energy and nutrients in our cells, which was discovered by Nobel Prize winner Sir Hans Krebs while working at the university.
Students from Parkwood Academy also playrf the part of molecules in a re-enactment of way the Krebs Cycle works on the field.
Today the iconic university arts tower was also turned yellow to celebrate the Tour de France’s arrival in Yorkshire tomorrow.
All 1,800 windows of the UK’s tallest university building have been transformed into a giant yellow jersey using 8,000 sheets of paper.
Staff from the University, Signs Express and volunteers from the Sheffield Children’s Hospital Charity worked through the night to turn all 20 floors into a sea of yellow.
Vice chancellor Professor Sir Keith Burnett said: “The University of Sheffield is delighted to welcome the Tour de France to Sheffield.
“Many of our staff and students are committed cyclists, and we have also encouraged a wide range of cultural and educational activities relating to this high-profile event.
“The fact that one of our most iconic buildings will be a visible form of welcome to the Tour is a reflection of our wider delight that Yorkshire will be hosting such a tremendous international event.”