The Glenfinnan Viaduct is a picturesque railway bridge located in the Scottish Highlands, near Loch Shiel. Built between 1897 and 1901, this iconic structure boasts 21 arches made of mass concrete, spanning the River Finnan at a height of 100 feet. It's famous for its appearance in films like Harry Potter and TV shows like The Crown. Visitors can even catch a ride on the Jacobite steam train that crosses this stunning viaduct, offering a scenic journey through the beautiful Scottish landscape.