If your trip to San Canzian d'Isonzo is all locked in but your travel itinerary is a little on the empty side, we can give you a helping hand.Stop by Riserva Naturale Regionale della Valle Cavanata. It's one sight you'll find on many travelers' must-do lists. If you still have some space on your itinerary, Riserva Naturale Regionale Foce dell'Isonzo and Riserva naturale della Foce dell'Isonzo will keep you busy too.