Trèves (36), a famous old city of Prussia, beautifully situated on the Moselle, 69 m. SW. of Coblenz; held to be the oldest city in Germany, and claiming to be 1300 years older than Rome; is full of most striking Roman remains, and possesses an interesting 11th-century cathedral, having among many relics the celebrated seamless "Holy Coat," said to have been the one worn by Christ; manufactures woollens, cottons, and linens, and wine.