The Hill of the O'Neill — the high point Dungannon was built around — was for over four hundred years the seat of the O'Neill kings of Tír Eoghain. The wooden fort that stood here was the political centre of Gaelic Ulster, and at its inauguration stone every new chieftain was proclaimed.
Today the hill holds the Ranfurly House heritage centre, a viewing platform, and the surviving sandstone remnants of the eighteenth-century Castle Hill plantation house. The interpretation panels around the platform tell the long history clearly. Free, open all day; the wind never quite stops.