Discussions

My and a friend got to talking today and somehow the conversation turned to there being a Nazi church by the City Hall?  
 
Is this true? Does this building actually exist? I asked a few other people and they also confirmed what she had told me, but I am still on the pessimistic side.  
 
If this beuilding does exist, is it not against the law? I don't understand. If someone can please tell me what you know about this certain subject that would be great!  
 
Thank you in advance.