Köln (Cologne) was my go -to city when I wanted variety. The city I visited when the stores in Bonn run out of a product I want be it clothing, shoes or whatever, Köln was sure to have it.
Köln has something for everyone; the tourists, the residents and visitors from the neighboring towns surrounding it, which is why you are guaranteed to meet people from all over the world visiting all year round. The most popular attraction in Köln is the historic and one time world tallest building, the Koln Dom which is regarded as a masterwork of medieval Gothic architecture. For the museum lovers, there is the Römisch-Germanisches Museum (Roman-German Museum) situated right behind the Koln Dom which houses artifacts from the Koln area dating from prehistoric times through the Roman and Germanic periods.
For the shopaholics, the city centre is filled stores for the big and small budgets. Koln is the shopping mecca of the North Rhine Westphalia
It was at the Köln station, I first saw gay couple displaying PDA without a care, I also witness my first gay parade in the city and orishirishi endless parade that they keep having.
Worthy of mention is the Rhine which runs through the Koln, A boat ride across the Rhine allows one take in the view of Köln Old town.