Enniskillen Castle was built in the 15th century by the Maguires, then chieftains of Fermanagh. The castle now houses the Fermanagh County Museum, and a heritage centre. The most striking feature of the castle is the Watergate, two turrets which were added to the castle to dominate the water approach to the castle.
The Buttermarket is a restored nineteenth century market which now houses craft workshops and exhibitions, with street entertainment and traditional music.
Ardhowen arts centre houses a restaurant, an exhibition area and a theatre.
Devinish Island is one of the most important monastic sites in Ireland. The monastery was originally founded by St. Molaise in the sixth century, but most of the ruins date from the twelfth century. There is a surviving round tower which stands eighty one feet and has a cornice carved with four human heads. A ferry crosses from Trory point from April to September.
At Killadeas Graveyard there is an early Christian carved stone known as 'Bishops Stone'.