Oslo is include as one of the fastest growing cities in Europe. In 1877, the city was renamed Kristania. The original name of Oslo was restored in 1925. The Opera House is among the most visited attractions in this city. There is also Vigelandsparken, it has so many beautiful and interesting statue. Oslo is the capital, the economic and governmental centre of Norway. The city is an important centre for maritime industries and trade in Europe. If you come to Oslo, you can learn more about the Vikings and their culture.