Be careful of bike route signs

I got a real mixed tour of Berlin today, for sure. Unfortunately even "Wedding" was a bust, I never found the purported bahnhof which I imagined would be something pretty and Bavarian.
All I found was the derelict Wedding Krematorium, a walled and gated compound that looked late C19th, complete with red tiled roof and a huge graffitied chimney out back.
Not exactly the tourist site I'd expected.
I guess this part of Berlin hasn't had its facelift just yet.