The O'Neill capital
The O'Neill dynasty - the dominant Gaelic power in Ulster - held Dungannon as their principal seat from the 14th century. They built their castle on what is now called the Hill of The O'Neill (Cnoc Uí Néill), a natural vantage point from which, in clear weather, you can see into seven of the nine Ulster counties. The most famous O'Neill to occupy it was Hugh O'Neill, 2nd Earl of Tyrone, who led the Nine Years' War (1593-1603) against the Elizabethan crown in one of the most sustained Gaelic resistances to English rule. When Mountjoy's forces finally closed in, in 1602, Hugh burned his own castle rather than leave it intact. In 1607 he left Ireland entirely, sailing from Rathmullan in Donegal in the event known as the Flight of the Earls - 99 Ulster chieftains departing for the continent, the end of Gaelic Ulster's political independence. The Hill of The O'Neill and Ranfurly House arts and visitor centre now stands at Market Square, at the foot of the hill, with a permanent exhibition on the Flight of the Earls and a glass viewing tower added in May 2016.