Why not go out of the beaten tracks now and discover numerous other marvels?
In order to understand the wide spread diffusion of Art Nouveau architecture, we have to recall the main factors of development for an architecture style at such a large scale : the primary factor is information and interest about this style (magazines like "Jugend", art studies and commercial trips, international exhibitions like world fairs). This has been combined to rural exodus and an important wealthiness (belle époque) that were at their climax in Europe. These explain the numerous constructions and their quality.