The Forth Bridge is a cantilever railway bridge over the Firth of Forth in the east of Scotland, 9 miles (14 kilometres) west of Edinburgh City Centre. It is considered an iconic structure and a symbol of Scotland, and is a UNESCO World Heritage Site. It was designed by the English engineers, Sir John Fowler and Sir Benjamin Baker.
Construction of the bridge began in 1882 and it was opened on 4 March 1890 by the Prince of Wales. The bridge spans the Forth between the villages of South Queensferry and North Queensferry and has a total length of 8,296 feet (2,528.7 metres). It was the longest single cantilever bridge span in the world until 1917. Read more about the Forth Bridge on wikipedia.