The charming working town of Killybegs, in Donegal, has a long tradition of fishing and is Ireland's largest fishing port. You'll get a good overview of the town's history at the Killybegs International Carpet Making & Fishing Centre. Set in the factory of Donegal Carpets, whose rugs adorn the White House and Buckingham Palace, you can sometimes see its hand-knotting loom (the world's longest of its kind) at work.
Wander along Shore Road and try to spot resident seals in the harbour. Or take a stroll on the secluded Fintragh Beach, where you can see the lighthouse at St John's Point. Don't miss the spectacular cliffs of Slieve League! They are some of the highest in Europe and plunge over 600m to the sea (although they're not vertical).
If you are looking for some excellent tweed items, don't miss Studio Donegal - there's been a hand-weaving tweed mill there for more than a century.