The moody, romantic Scottish Highlands start at Loch Lomond just north of Glasgow. Comprising a slew of mountain ranges, this sparsely populated land is best seen by train on the West Highland Line. Mountains, lochs, bright heather and rhododendrons give way to white sand beaches and rugged coves as the train nears Mallaig. For a more active take on the region, hike the West Highland Way or visit the Trossachs National Park. Ben Nevis, a popular climbing spot, looms over the town of Fort William.