At the top of Northeast Donegal is Inishowen, Ireland's largest peninsula. On this Wild Atlantic Way tour, I'll show you around part of the peninsula's 100-mile coastal drive known as the 'Inishowen 100'. On your journey, you'll see the glacial fjord, Lough Swilly, which inspired the hymn 'Amazing Grace'. You'll learn the ancient secrets of Grianan of Aileach ring fort, seat of power of the chieftains of Ulster. I'll recount the tragedy of...