Ballochmyle Viaduct - Credit: Wikimedia Commons
The Ballochmyle Viaduct is the tallest extant railway viaduct in Britain. It is high, and carries the railway over the River Ayr near Mauchline and Catrine in East Ayrshire, Scotland. It carries the former Glasgow and South Western Railway line between Glasgow and Carlisle. Read more on Wikipedia
Source: en.wikipedia.org