I know most of the discussion in this thread has tackled animals but I think Europe also has to offer a wide variety of options for scenery. The rich history and the cultural variety of the continent means a scenery pack could include anything from classic Italian renaissance to north-western European gothic architecture. Personally I'd love to see 2 styles make it into a Europe DLC;
- Gothic scenery: not to be confused with your classic horror gothic, but moreso referring to the style that many historical churches are built in. Gothic architecture has some great features such as buttresses, pointed arches, rib vaults, spires, traceries and intricate detailed windows. Just look at the following image and tell me that you wouldn't want to have something like this in PZ.
- Art Nouveau scenery: Art Nouveau is a style originating from Western Europe in the late 19th century and is mostly used in interior design. It has this magic feeling surrounding it and I think that in combination with the Gothic style, it would allow for some nice fantasy themed zones. What's great about Art Nouveau is also how widely popular it became throughout Europe, making it truly a European feature. In France and Belgium it's Art Nouveau, in German it's Jugendstil, in Catalan it's Modernisme català etc. etc. It would add some great pieces to use in interiors and Art Nouveau murals are just absolutely beautiful, as one of its characteristics is drawing a lot from nature, using floral elements and animals.