Loch Lomond is mainland Britain's largest lake and, after Loch Ness, the most famous of Scotland's lochs. Its proximity to Glasgow (20 miles away) means that the tourist honey pots of Balloch and Luss get pretty crowded in summer. The eastern shore, which is followed by the West Highland Way long-distance footpath, is quieter and offers a better chance to appreciate the loch away from the busy main road.
Loch Lomond straddles the Highland border. The southern part is broad and island-studded, fringed by woods and Lowland meadows. However, north of Luss the loch narrows, occupying a deep trench gouged out by glaciers during the Ice Age, with 900m mountains crowding either side.