If your trip to Castletownbere is all booked but your travel itinerary is a little on the empty side, we can give you a few hints and tips.Stop by Dunboy Castle. It's one sight you'll usually find on many travelers' must-do lists. If you still have space on that itinerary, Issie's Handmade Chocolate and Derreenataggart Stone Circle will keep you busy as well.