The Forth Bridge

The Forth Bridge, spanning the Firth of Forth west of Edinburgh in Scotland, is one of the greatest cantilever railway bridges in the world and a defining icon of Victorian engineering. When it opened in 1890 its main spans of 541 metres were the longest on Earth, and its vast diamond-shaped lattice of steel tubes — painted a distinctive deep red — remains a symbol of Scottish industrial achievement. The design's forthright, unadorned display of its own structure was innovative in style, materials and scale, marking a milestone in bridge building during the age when railways came to dominate long-distance travel. Built to reassure a public shaken by the earlier Tay Bridge disaster, it was engineered with immense strength and has carried passengers and freight continuously ever since. Still in daily use more than a century later, the Forth Bridge was inscribed on the UNESCO World Heritage List in 2015.