Oslo, the capital of Norway, is located on the southern coast of the country and is considered a city of magnificent fjords and green hills. Oslo has a population of about 634,293. Oslo is distinguished by the beauty of its culture and artistic heritage, as it is a city rich in historical museums such as the National Museum, the Viking Ship Museum, and the Opera House. Although Oslo is one of the most expensive cities in the world in terms of standard of living, it has many free activities that suit most visitors. Oslo has many tourist attractions, such as Akershus Castle, which is distinguished by medieval architecture, and the Norwegian Royal Palace, which organizes tours for the public during the summer. In the summer, the city of Oslo allows tourists to ride boats to wander the waterways and discover the surrounding mountains and scenic landscapes.