Ston is known for its "Great Wall of Europe," a 7-kilometer-long city wall built in the 14th century to protect the city's salt pans and the safety of the peninsula. The city wall is magnificent and well-preserved, making it a great place for tourists to explore history. The old town of Ston, Croatia, is famous for its unique fortifications and rich history. The old town of Ston is full of medieval history, with stone streets and scattered buildings that seem to take you back in time. This was the northern frontier of the Republic of Ragusa, witnessing the prosperity and changes in southern Croatia.