The Ston walls are the remains of a defensive fortification system that surround the town of Ston. Only part of these fortifications have survived to our times and they are open to the public. Ston walls are sometimes called the "European Chinese wall" because it is the longest preserved fortification system in Europe.
Originally, the walls were over seven kilometers long and surrounded the entire city of Ston, and also connected them to the nearby town of Mali Ston. There were also 40 defensive towers and fortresses along the walls. About 5 kilometers of walls and the remains of 20 towers have survived to this day.
The construction of the walls began during the reign of the Dubrovnik Republic in the 1850s and ended in the 15th century. These fortifications contributed to the effective defense against Turkish attacks. During the Austrian rule, the systematic demolition of walls began, and the stone thus obtained was used as a building material for other buildings.