If your trip to Tregastel is all booked but your itinerary is a little on the empty side, let us give you a few hints and tips.Plan a stop at Ploumanac'h Lighthouse. It's one attraction you'll find on most visitors' to-do lists. If you still have some room on that travel itinerary, Village Gaulois and Perros-Guirec Beach will keep you on the go too.