Aa·chen 
(äkən, äən) also Aix-la-Cha·pelle (āks′lä-shə-pĕl, ĕks′-)
(äkən, äən) also Aix-la-Cha·pelle (āks′lä-shə-pĕl, ĕks′-) A city of western Germany near the Belgian and Dutch borders. Charlemagne may have been born here in 742; he later made the city his northern capital.