New place just down the road from the remnants of the city wall (which would still have been standing, had not the populace murdered Archbishop Arnold von Selenhofen in 1160 (he tried to raise taxes – quite a justified reaction, I’d say…) and caused Kaiser Friedrich I to lose his rag, have everyone excommunicated and to wreak vengeance by bowling the city wall, leaving the city “prey to wolves and dogs, thieves and robbers”.
To be historically correct, it WAS rebuilt on a number of occasions, but great chunks were bowled after the Treaty of Versailles (that’s what happens when you lose…).
Anyway, this new place’s architect was quite clued up, replicating the arrowslits of the existing wall.
Of course, with the traffic blasting down the Rheinstrasse day and night, having small windows facing it isn’t the worst idea in the world…