The Art Nouveau architectural/decorative movement of roughly 1890-1910 had considerable impact in several cities in the northern half of Europe: Prague, Riga, Brussels, Budapest and Paris quickly come to mind as boasting notable structures designed in that idiom.
One place Art Nouveau passed by was Dublin, Ireland. Now there might indeed be an Art Nouveau style building someplace in the town, but if there was, I missed it during three full days of traipsing around the city in August.
All was not lost! A helpful guidebook directed us to Dawson Street and the Café en Seine, a pub gloriously decorated with Art Nouveau style objects.
Take a look at some photos I took: