See the print left by the founders of Oslo in its medieval architecture, walk through 700 years of history encapsulated in a fortress that has guarded the city from riders and soldiers alike. Step further in time to the town of Christiania. See the first City Hall building from the 17th century and feel the atmosphere of the many cafe terraces and restaurants, which have taken over this area of Oslo. Visit Oslo's City Hall and its main hall, internationally known for hosting the award ceremony of The Nobel Peace Prize each year. Step into 18th century architecture and see the Norwegian Parliament, walk to the National Theater, stand in front of the neo-classical building of the University of Oslo, stroll on to the Royal Palace and its beautiful gardens. Walk down Oslo's main street with its many shops and vibrant atmosphere. Stop by the central train station to appreciate early 19th century architecture, and finally explore contemporary buildings. Step onto the roof of award-winning Oslo Opera House and enjoy the beautiful view of the Oslo fjord from there.