5. Glenfinnan Viaduct, Glenfinnan, Scotland
Fans of the Harry Potter films will recognize this as the railway viaduct that the Hogwarts Express chugs across. It's not the only film to feature it. It "starred" in Charlotte Gray, Monarch of the Glen, Stone of Destiny and Ring of Bright Water too.
Built by Sir Robert McAlpine at the end of the 19th century, the viaduct is composed of 21 arches, each spanning 15 metres and has a maximum height of 30 metres offering sumptuous views down to Loch Shiel below. The railway viaduct is on the West Highland Line in Glenfinnan, Lochaber in the Highlands and a round-trip ticket, between mid-May and the end of October, will set you back 32 pounds (around $50).