The view from Aileach is breathtaking. The glistening waters of Lough Foyle and Lough Swilly are clear as is the form of the entire peninsula. A windy and exposed place, Grianan has been a silent witness to the history of Ireland. Noted in the mythologies of Ireland, it seems the fort was first constructed around 1700 BC (probably with earthen walls), by the Tuatha de Danann. It has been ascertained that it was the Palace of the Northern Princes, from a period long before Christianity (AD 400) up until the 14th century. The Princes of Aileach play an important role in Irish history often becoming Ard Righ (or High King).