The bridge and the cathedral are worth a visit at sunset or even just after sunset when the cathedral and bridge are lit up. That would make a great photo.
There is no way around it, you have to visit a brewery. You’ll sit down and get a Kölsch beer (Cologne beer) right away without asking for it.
German wine might not be as well-known as Italian or French, but the quality is first class. Even if you don’t like drinking wine, you should consider heading there.
There are many street carnival parades of different sizes. The biggest one is on Carnival Monday & there will be huge trucks and thousands of people attending!
The Ludwig Museum is home to some of the world’s most stunning pieces of 20th-century art, including many pieces by Pablo Picasso, Roy Lichtenstein and Andy Warhol.