Glenfinnan Viaduct is a railway viaduct located on the West Highlands line in Glenfinnan. The viaduct is located at the top of Loch Shiel in the West Highlands a short distance from the town of Fort William. The viaducts offers exceptional views overlooking Glenfinnan Monument and over Loch Shiel. The West Highland Railway is a spectacular rail excursion taking in some of the finest views of the Scottish Highlands. The viaduct was constructed with mass concrete with 21 semi-circular spans of 50 feet and it is the longest concrete bridge that was constructed in Scotland at 380m and crosses the River Finnan at 30 metres. Glenfinnan Viaduct has been in popular use in films and television series including Ring of Bright Water, Charlotte Gray and also appeared in four of the Harry Potter films. The viaduct also appears on the Bank of Scotland money currency with the Glenfinnan Viaduct appearing on the £10 note.