Château-Thierry is a commune of north-eastern France, about 56 miles east-northeast of Paris. It is a sous-préfecture of the Aisne département, in the Picardie administrative région.
Château-Thierry was the site of two important battles. The Battle of Château-Thierry (1814) in the Napoleonic Wars between France and Prussia, and Battle of Château-Thierry (1918) in World War One, between the United States and Germany.
Château-Thierry is situated on the Marne River.
Château-Thierry is the terminus station of a regional railway line starting from the Gare de l'Est in Paris. It is also one of the exits of the A4 motorway that links Paris with the east part of France.
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