We did some sightseeing-lite on our final morning: the view from St. Nikolai and its small underground museum that tells us about war-what-is-it-good-for-absolutely-nothing type of stuff.
After that we were having coffee when we saw the coolest people ever on their insane Harleys: big German flags waving on the back, golden Bismarcky helmets on their heads... and then we finally found out why we'd seen so many motorcycles the last few days: a rally. I couldn't find the Bismarcks again, but we checked out all the bikes before picking up our luggage and heading to the station.
And that is finally that about Hamburg. For now at least.