If your trip to Tredarzec is all locked in but your travel itinerary is looking a little empty, let us give you a helping hand.Not far from the city center, Cathedrale Saint-Tugdual de Treguier is one sight you might like to add to your to-do list. Jardin du Kestellic and Maison d'Ernest Renan are also a stone's throw away and worth taking the time to see.