Loch Leven is the largest lowland loch in Perth and Kinross, Scotland. Loch Leven Castle can be found here, which was for a year the prison of Mary, Queen of Scots, in 1567 and it can be reached by ferry. The loch makes part of the word-famous Loch Leven National Nature Reserve, one of the most signicant sites fir birds in Europe. The unique and diverse scenery of the loch area draws flocks of hill walkers. The loch presents a couple of islands, St Serf's Inch being the widest.