Norway's main tourist attractions are its natural scenery, particularly the fjords and North Cape region which allows viewing of the midnight sun. The majority of visitors are interested in Norway's nature, which can be experienced through cruises, buses and trains. While Oslo, Bergen and Trondheim offer museums and historical sites, most tourists are drawn to Norway for outdoor activities like hiking and experiences of the landscape. Tourism in Norway focuses on promoting the country as a place for escaping and adventure in nature. Visiting season is generally from May to September.