Donegal (Dún na nGall, "Fortress of the Foreigners"), county town of Donegal county, lies in Donegal Bay, near the north end of the Irish west coast, at the point where the River Eske flows into the bay and the N15 runs into the N56.
Originally a Celtic settlement, the town owes its present form to the regular plan, centered on the market
square appropriately called the Diamond, laid out by the British authorities in the early 17th C.
The obelisk in the market square was erected in honor of the Four Masters.