It was billed as a privileged access tour and indeed it was.
Our Top of Cologne tour was actually the second of the day. Steps from our Viking Longship, we explored the highlights on a walking tour earlier in the day. In the afternoon, we went up the same elevator used by the workmen that continually perform maintenance on the structure and probably always will.
That elevator took us up high over the city. Continuing to explore through narrow passageways and up very tight spiral staircases. our efforts were rewarded with a magnificent view of the city below.