Château-Thierry is a commune located in the Aisne department in northern France. It is situated along the banks of the Marne River and is known for its rich history, particularly during the World War I era. The town features several historical sites, including the Château de Château-Thierry, which dates back to the medieval period. The area is also famous for its connection to the poet Jean de La Fontaine, who was born nearby. Today, Château-Thierry is a vibrant town that attracts visitors with its charming streets, local cuisine, and cultural heritage, making it a notable destination in the region.