The Highlands is the most historic area of Scotland and is the northwest coast and islands between the Great Glen, the Grampian Mountains, and the Highland Boundary Fault. The Highlands remain unspoiled and sparsely populated and is ecologically important as it is the only place in the British Isles to have a taiga biome. Traditionally, people in the The Highlands spoke Gaelic, but today Scottish English is the official language. The Highlands is full of historical attractions, including ancient castles and battlefields, several National Parks, more than two dozen Lochs, the Inveraray Jail, endless opportunities for outdoor recreation, and much more.