From the outside the stadium has a very continental feel with its spiral entrances / exits built on to the outside of the stadium.  The inside is impresive - the roof runs continuously around the stadium creating a pretty cool effect.  The atmosphere was typical "big club" - quiet until a goal was scored.  At that point it's excellent - with the City fans adopting "the Poznan".  I had a few quid on 3-1 to City, too.  Result!