Forth Bridge Parabola

The Forth Bridge, a UNESCO World Heritage site between the City of Edinburgh and Fife in Scotland. The bridge is a cantilever structure.
With thanks to (Round Britain Expedition) who own the copyright on this photograph. It was not easy finding a decent shot from more-or-less the centre of the river. The vast majority of photographs (including my own) are taken from one of the banks and have perspective issues when curve fitting.