There are 12 gates through which you can enter the city of Cologne. Hahnentorburg is the most popular.
The gate features 2 semi-circular towers. In between you can see Cologne’s Coat of Arms. As was the case with much of Cologne, the gate was damaged during WWII and later rebuilt.
On the day I visited, there was a flea market going on with many vendors set up along the path to the Gate.