|The Dom in all its Gothic glory.|
Everyone knows most major cities have iconic buildings you must visit: Taipei 101 in Taipei; the Empire State Building in New York City; the Eiffel Tower in Paris, etc. For Cologne, it's the Cologne Cathedral, also known as the Dom.
The Dom towers over downtown. I say "towers" rather reluctantly since you can feel yourself under its shadow as if its something menacing - and it does look menacing because of it's Gothic appearance. Yet, at the same time, the Dom is a church, so perhaps "protective" would be a better way to describe it's presence. Either way, you can't miss it even if you tried. I don't know why you would avoid it. Even if you aren't an architecture buff or of religious persuasion, a short one hour stop at the Dom is worth it. A person can't even make an excuse for not visiting it since it's across the way from the main station.