![](https://static.dezeen.com/uploads/2015/12/Pont-de-Singe-balloon-bridge_Olivier-Grossetête_advent-calendar_dezeen_sqb.jpg)
Dezeen's A-Zdvent calendar: Pont de Singe by Olivier Grossetête
Three enormous helium balloons supported the hazardous elevated pathway of Olivier Grossetête's Pont de Singe, the letter P in our alphabetical countdown of iconic bridge design. More