Troyes is a commune and the capital of the department of Aube in the Grand Est region of north-central France. It is located on the Seine ri…Troyes is a commune and the capital of the department of Aube in the Grand Est region of north-central France. It is located on the Seine river about 140 km south-east of Paris. Troyes is situated within the Champagne wine region and is near the Orient Forest Regional Natural Park.