The Glenfinnan Viaduct is a railway viaduct on the West Highland Line in Glenfinnan, Lochaber, Highland, Scotland. Located at the top of Loch Shiel in the West Highlands of Scotland, the viaduct overlooks the Glenfinnan Monument and the waters of Loch Shiel.

Built between 1897 and 1901, the viaduct is a stunning feat of engineering, composed of 21 arches. However, it is most famous for its starring role in the Harry Potter films, where it features as the route for the Hogwarts Express. This has made it a pilgrimage site for fans from all over the world.

The Jacobite steam train runs on the line during the summer months, offering a chance to recreate the magical journey for yourself and witness one of Scotland's most iconic views.