People have believed that Loch Ness is home to a giant monster since the 7th century, so it's no surprise that this loch is arguably the most famous in Scotland. The loch runs all the way from Loch Dochfour to Fort Augustus; it's possible to drive along the western shore of the loch and stop off at the fascinating Urquhart Castle on the way. Visitors hoping to catch a glimpse of the elusive Nessie won't have a problem finding a bus or boat tour, but the loch is also worth a visit if you'd simply like to spend the day fishing or sailing.