L'edificio del Parlamento ospita Storting (Parlamento) norvegese e risale al 1866. Ogni giorno si può approfittare dei tour guidati fra il 1 luglio e il 20 agosto, in norvegese, inglese, tedesco e francese, alle 10, 11.30 e 13. Fra il 15 Settembre e il 15 giugno ci sono tour ogni sabato (solo in norvegese) alle 10, 11.30 e 13. Su richiesta si possono svolgere visite fra settembre e giugno. L'entrata è gratuita. La visita dura circa un'ora.

One of the most important municipal buildings in the Norwegian capital, the Oslo Town Hall can be spotted standing next to the iconic Akershus Fortress on the famous Rådhusplassen that overlooks Oslo's picturesque harbor and waterfront. Its soaring twin towers, measuring 216 feet (66 meters) and 206 feet (63 meters), make it one of the more unique edifices in the city. Completed in 1950, the building was designed by the renowned Norwegian architects Magnus Poulsson and Arnstein Arneberg, and built primarily using red bricks that give it a distinctive hue. Some of the building's main attractions include Henrick Sorensen's wall decoration, the astronomical clock, and the north side entrance. The city hall has had the privilege of hosting the prestigious Nobel Peace Prize ceremony every year since 1990.

Kvadraturen è il cuore della città Cristiania che risale a Cristian IV, e che venne costruita quando Oslo bruciò nel 1624. La città venne ribattezzata Oslo solo 300 anni dopo. La scultura nella piazza Christiania Torv simboleggia le parole del re quando decise che la nuova città sarebbe sorta lì. Si può trovare una statua del re a Stortorvet. Kvadraturen offre ottimo cibo da Statholdergaarden, cucina mediterranea da Celsius e una cena elegante alla Brasserie Hansken.

Consacrata nel 1697, risale per la maggior parte a quell'epoca. Restaurata fra il 1849 e il 1850 da Alexis de Chateauneuf, architetto della Trefoldighetskirke, ha subito ulteriori lavori tra il 1948-50. La cattedrale si trova vicino alla Stortorget in centro città. Il re Harald e la regina Sonja si sono sposati qui come il principe Haakon Magus e Mette-Marit. Viene anche usata come cripta e come sala concerti. L'entrata è gratuita.

In 1849 Hamburg's great city planner Alexis de Chateauneuf won the competition to build a church for the Congregation of the Trinity. The building has a cruciform plan, crowned at the center with a copper-plated dome and a lantern at the apex. The Church of the Trinity was consecrated in 1858 and the entrance staircase was added in 1883. Inside you will find an altarpiece depicting Christ being baptized and a marble baptismal font. The church was re-consecrated in 1958 and after a thorough renovation was re-opened to the public in 1997.

La più grande biblioteca del paese è nata più di 200 anni fa quando Carl Deichman ha lasciato in eredità la sua vasta collezione alla città. L'edificio si trova non lontano dalla Trefoldighetskirken e dagli edifici del governo. Si trova a pochi passi dal centro della città.

Slottsbakken, la cima della collina dove è costruito il palazzo, offre una vista magnifica sul Karl Johans Gate. Il giorno della festa della Norvegia (17 maggio) il re e il resto della famiglia reale si affaccia dal balcone e saluta i migliaia di cittadini che si trovano per la strada. Per tre volte in un'ora fra il 17 giugno e il 12 agosto, si può partecipare della visita. I biglietti devono essere comprati in anticipo.

Vigeland Park is the world's largest sculpture park dedicated to the work of a single artist, and an ode to one man's obsession with the human form. The park displays over 200 sculptures fashioned from granite, bronze and wrought iron by the Norwegian artist, Gustav Vigeland, created over a period of 20 years from 1924 to 1943. In fact, the park itself was designed by the famed sculptor and is actually a mammoth installation in Frogner Park. Vigeland's work varies from depictions of humans engaged in everyday tasks, to more symbolic and abstract works like The Monolith, a 14.12-meter (46.33-foot) high sculpture composed of 121 human figures intended to represent the human desire to reach out to the divine. Other notable sculptures include The Wheel of Life and The Fountain. Although each is a masterpiece in its own right, the interplay with the layout and architecture of the park creates a whole that is more amazing than the sum of its parts. Today, Vigeland Park is one of Oslo's most popular attractions, visited by over one million tourists each year.

Snuggled in the northeastern outskirts of the Norwegian capital's bustling cityscape, the usually peaceful neighborhood of Holmenkollen transforms into a vibrant tourist hub with the arrival of snow. Thanks to its crown jewel, the Holmenkollbakken, believed to be one of the oldest ski jumps in the world, the area is visited by skiing enthusiasts from all over Norway. Another popular attraction in the locale is the famous Ski Museum, that exhibits the region's love of the sport. The neighborhood is also the central point for visiting the Nordmarka, a lush green forest reserve.

Holmenkollbakken on the west side of the city is famous for the enormous ski jump that can be seen from just about everywhere in Oslo. The most popular sports arena in Norway, Holmenkollen also contains the world's oldest Ski Museum and an exciting ski-simulator (on which visitors can try out the Holmenkollen ski jump themselves!). Holmenkollen hosts a variety of winter sports events, culminating in the annual ski festival in March. Even those not interested in winter sports should not miss the chance to enjoy the spectacular panoramic view of the city.