The Forth Bridge is a true engineering marvel and a masterpiece of Victorian engineering. This iconic landmark spans the Firth of Forth in Scotland and is the world's first major steel structure. This impressive this UNESCO World Heritage Site took over 7 years and 4,600 workers to complete, and it stands at a height of 110 meters with a total length of 2.5 kilometers. Capturing the Forth Bridge from above is a unique experience.