Jugendstil in Helsinki 3 Replies The island of Katajanokka, just outside the center of Helsinki, might have more Jugendstil buildings per square mile than anyplace else on earth. It seems that in the early 1900s, when industrialization was drawing rural Finns into Helsinki, there must have been a building boom. Builders must have raced to create castles for the common people: fanciful and beautiful apartment buildings with turrets, towers, interesting windows, and beautiful decorative elements. We stayed in one of them, and I’d have cheerfully stayed longer. I could see myself living in beautiful, friendly Helsinki. The city is known for its style. Now I see why!