Cologne Cathedral (Kölner Dom) is a masterpiece of High Gothic
architecture & A UNESCO World Heritage site that took 632 years to
complete (1248–1880) and is famous for its 157 meter twin spires:Once the tallest building in the world.
It is one of the oldest German cities, founded 2,000 years since by the Roman Empire. The Cathedral, as you might guess when you gasp, literally, as you embrace its mysterious majestic persona coming out of the train station, is a UNESCO heritage site.