Cologne Cathedral South View - Cologne Cathedral (German: Kölner Dom, Officially Hohe Domkirche St. Peter Und Maria, English: High Cathedral Of Sts. Peter And Mary) Is A Roman Catholic Church In Cologne, Germany. It Is The Seat Of The Archbishop Of Cologne And The Administration Of The Archdiocese Of Cologne. It Is A Renowned Monument Of German Catholicism And Gothic Architecture And Is A UNESCO World Heritage Site. It Is Germany's Most Visited Landmark, Attracting An Average Of 20,000 People A Day. Photo