More to explore:
Old City Wall in Dubrovnik
Sea walls, historic Dubrovnik, Croatia
Carcassonne - A Medieval Walled City in The South of France
The medieval city walls of Dubrovnik - Croatia.
Champagne in Bassano by maxbox, province of Vicenza , Veneto region Italy
The gorgeous walled city of Sienna, Italy. What's not to love!
Medieval Walls - Carcassonne, Languedoc-Roussillon, France
One of the gate entrances to the walled city of Dubrovnik, Croatia
One of my favorite places I've visited, the little walled city of Stein am Rhein, Switzerland
Torun, fortified city wall
Castle Duurstede, a medieval castle in Wijk bij Duurstede in the province of Utrecht in the Netherlands.