Muenster Cathedral in Freiburg.

We went into this catherdral and were amazed by the size of the building. We climbed up the steps in a tower to get to the top. I came back down after getting up halfway as I was so dizzy. It was like winding up a piece of thread on a spool! I waited for the rest of them in the cathedral and got to hear a mens choir singing inside. The sound was incredible.