Dungannon is a hilltop town in County Tyrone, Northern Ireland, historically significant as the ancient seat of the O'Neill clan, the most powerful Gaelic lords in Ulster. The O'Neills ruled from a fort on the hill where the town now stands for over 400 years, and it was from here that Hugh O'Neill led the last great Gaelic resistance to English rule before his defeat and the Flight of the Earls in 1607.
The town itself is a working market town rather than a tourist destination, but it has a few things worth seeing. Ranfurly House, a restored 18th-century building in the town centre, serves as a visitor centre and tells the story of the O'Neills and the plantation of Ulster. The Hill of the O'Neill where the fort once stood offers views across the surrounding countryside. Parkanaur Forest Park, a few kilometres west of town, has pleasant walking trails through mixed woodland and a herd of rare white fallow deer.
Dungannon sits in good agricultural country on the edge of the Clogher Valley. The Linen Green, a retail village on the edge of town, reflects the area's long association with the linen industry. Castle Caulfield and the early-medieval Donaghmore high cross are short drives west. The town makes a reasonable base for exploring the Sperrins to the north, though most visitors will find a day stop sufficient.