High Quality Content by WIKIPEDIA articles! Xanten Cathedral (German: Xantener Dom), sometimes called St. Victor`s Cathedral (German: St. Viktor Dom), is a Roman Catholic church situated in Xanten, a historic town in the lower Rhine area, North Rhine-Westphalia, Germany. It is considered the biggest cathedral between Cologne and the sea. In 1936 it was declared a minor basilica by Pope Pius XI. Even though the church is called a cathedral it has never been the seat of a bishop.