If you're searching for a town called "Roc" in Istria, Croatia, you won't find it there. The Roc you're likely thinking of is a charming medieval commune in the Loire-Atlantique department of the Pays de la Loire region in western France.
Perched on a rocky outcrop overlooking the Loire Valley, Roc (sometimes written as Le Roc) is a classified "Petite Cité de Caractère" (Small Town of Character). Its well-preserved medieval streets, half-timbered houses, and 15th-century château make it a delightful stop for history lovers.
If you're looking for a picturesque coastal town in Istria, Croatia, you might mean Rovinj—a stunning Venetian-era port city on the Adriatic, known for its bell tower, narrow alleys, and vibrant art scene. Rovinj is one of Croatia's most photographed destinations.
Roc is about 40 km (25 miles) northeast of Nantes. The nearest train station is in Ancenis (TER regional line from Nantes). By car, take the D723 from Nantes toward Angers, then follow signs for Le Roc.
Whether you're drawn to the medieval heights of Roc, France, or the Adriatic charm of Rovinj, Croatia—both offer unforgettable Old World atmosphere.