The most impressive landmark by far is Kölner Dom, the Cathedral of Cologne. It is massive, and every inch of the outside is covered in beautiful, ornate carvings. I have so many photos of the cathedral that I'm splitting them into two posts of their own, and I'll cover the rest of my amazing day trip later.
This cathedral made Notre Dame look like a playhouse. This is as much of the front facade as I could manage to fit in one photograph, and to take this I was reclining backward, practically lying down, only a few feet from the street. Thank heaven the cathedral rests a few steps higher than the street level, or I never would have managed this shot.
It probably wouldn't hurt to mention that the temperature was well below freezing when we arrived. Hence my Eskimo-appropriate attire in the photo above. (Believe it or not, I was still shivering violently for most of the day, and despite wearing two pair of super-thick fuzzy socks, my toes were numb until it began to warm slightly around midday.) Still, the experience was well worth the cold. And at least there were blue skies for the photos!
This last photo I snapped in the evening, just before we left. The way the setting sunlight warms the stonework is incredibly beautiful. I adored everything about Cologne, but the cathedral at sunset especially captured my heart.