The lunch was more than fulfilling for the four of us and we were then ready to explore Cologne Cathedral and its surrounding areas after this meal. The restrooms were free of charge for its current customers but once you left the establishment, you would be charged €1 to enter. Thus, we made sure we visited one more time before we left the restaurant. China Restaurant Peking Am Dom is a great Chinese restaurant to dine in at for lunch (or dinner) in the Cologne Cathedral area.