[10] Euler realised that it is easy to show that no solution exists using a brute force approach.
However he wanted to find a more elegant proof, which led to a new approach that Euler called Geometry of Position.
These works eventually evolved into several major branches of mathematics including topology and graph theory.
[12] In Bristol one of these is Spike Island, whereas the other consists of Redcliffe and St Philip's Marsh, which were historically separate, but are now joined by a land bridge.
A highlight is Isambard Kingdom Brunel's Temple Meads railway station through which the route passes.
It then continues on a footpath along a stretch of Bristol's New Cut to the blue Temple Meads Relief Line Bridge.
The route passes the TV studios in the old paintworks area before crossing the New Cut again via a rope suspension bridge.
At Netham Lock it rejoins the River Avon and crosses New Brislington Bridge into the suburb of St Anne's.
The path continues along disused docks that are remnants from the Industrial Revolution to St Anne's Footbridge, the easternmost point of the walk.
The route follows an old towpath to the village of Pill where the largest and westernmost bridge of the walk is located.
The route then goes past the harborside entertainment venues over Pero's Bridge and on to Victoria Square.