Loch Shiel stretches into the mountains beneath the Glenfinnan Viaduct, the one the Hogwarts Express crosses in every Harry Potter film. In person, the scale hits differently. Mist on the water, peaks disappearing into cloud, the arch of the viaduct framing all of it.
The Glenfinnan Monument at the loch's north end adds history to the drama. Check the Jacobite steam train schedule if you want the full cinema.