The capital of NRW

In 2016 I had been challenged to a wrestling match by g6fighter, and even though he was a few years older than me, I really met my match, as he had been wrestling with far more than hundred opponents, both MeetFighters members and people from outside. But he was a nice guy to meet, and when I found out that he lived in Düsseldorf I thought that it could be a good idea to visit him there. And this opportunity became real in February 2018.