West Highland Line, Forth Bridge, Blair Castle

A look at the people who work on Scotland's railways and steam enthusiasts who safeguard these iconic routes. They include train conductor Suzie Sangan, whose social media posts celebrate one of the world's most beautiful railway lines. Cameras also focus on engineers abseiling beneath the Forth Bridge to carry out essential checks on one of the world's most famous UNESCO Heritage sites. And there's a trip to Blair Castle for the pipes and pageantry of the Atholl Highland Gathering.