Roman Catholic Diocese of Oslo

St. Olav's Cathedral (Norwegian: Sankt Olav domkirke) is the cathedral of the Roman Catholic Diocese of Oslo and the parish church of St. Olav's parish in Oslo, Norway. The cathedral has church services and masses in Norwegian and several other languages, including English and Polish.

The Norwegian Museum of Decorative Arts and Design (Norwegian: Kunstindustrimuseet) is a museum in Oslo, Norway. Its collection includes clothing, textile, furniture, silver, glass, ceramics, and handicrafts. Since 2003, the museum has been administratively a part of the National Museum of Art, Architecture and Design (Nasjonalmuseet for kunst, arkitektur og design).

The National College of Art and Design (Norwegian: Statens håndverks- og kunstindustriskole) was established in 1818. In 1996 the National College of Art and Design became part of Oslo National Academy of the Arts (Kunsthøgskolen i Oslo, KHiO).

Søilen Teater was a theatre that opened in Oslo in 1930. It was managed by Sophus Dahl until 1932. It was then a supporting stage for Chat Noir until 1934. From 1934 to 1939 the theatre was run by Henry Gleditsch, and from 1939 it was run by Aud Ricther. From 1942 it housed Leif Juster's stage Edderkoppen Theatre, and in 1945 it housed Studioteatret.Among actors who made their stage debut at Søilen Teater were Wenche Foss,Vibeke Falk,Svend von Düring,Jon Lennart Mjøen,Carsten Byhring,Jack Fjeldstad, Carsten Winger, Kolbjørn Brenda, Ragnhild Michelsen,Siri Rom, and Georg Richter.

St. Sunniva School (St. Sunniva skole) is an independent Roman Catholic school located in the centre of Oslo, Norway. The school was founded by the Sisters of St. Joseph from Chambéry in the Rhône-Alpes region in south-eastern France. Founded in 1865, it was part of an effort to restore Roman Catholicism in Norway. Queen Josephine, consort of Sweden and Norway, was an ardent supporter of the school. Her sister Queen Amélie, Empress of Brazil, also provided support.The school was owned and operated by the Sisters of St. Joseph for 140 years. Since 1 August 2005, it has been owned and operated by the Catholic Diocese of Oslo (Oslo Katolske Bispedømme). The school averages 540 students between the first and tenth grade.

Trinity Church (in Norwegian, Trefoldighetskirken), is a church in the Hammersborg neighborhood in central Oslo, Norway. Trinity Church is neighbor of the government buildings in Regjeringskvartalet. It is the parish church of the parish of Trinity, belonging to the Diocese of Oslo of the Church of Norway. It is one of the largest churches in Oslo (1000 seats). The church itself is in the raw red brick, while the vaults, arches and small columns have gray scale color. The nave is octagonal with a Greek cross superimposed, with the choir in the apse, shallow transept and rectangular entrance flanked by two slender, octagonal bell towers. A central dome rises above the church. Trinity Church is the largest church in Oslo and one of the largest of the many octagonal churches in Norway, but one of few octagonal churches constructed in red brick.

Akersgata (1-73E, 2-74) is a street in Oslo, Norway. It contains a number of important buildings such as the Parliament of Norway Building, several government buildings in the Regjeringskvartalet, the Trefoldighetskirken (Trinity Church), and the Centralteatret.

The Y-Block was a building in Oslo, Norway, extant from 1970 to 2020. The building, designed in a Brutalist style by Erling Viksjø, was part of the Regjeringskvartalet (Government Quarter) in the centre of the city. It featured two murals by Pablo Picasso. It was one of few sites with murals designed by Picasso, along with the Château de Castille in France and the Col·legi d'Arquitectes de Catalunya in Barcelona.The building was damaged during the 2011 Norway attacks. In 2020, following intense public debate, the building's murals were removed and the remaining structure was demolished. The murals are planned to be incorporated into a replacement building.

Johan Nygaardsvolds plass is a town square in Oslo, Norway. It is located between the offices of the Ministry of Finance, Høyblokka ("High Block"), and Y Block in Regjeringskvartalet. The square encompasses the Regjeringsparken ("The Government Park") with a water feature and an allée of trees. The square and park were designed by architect firm of Lunde & Løvseth. The square is named after Prime Minister Johan Nygaardsvold (1879-1952) who was Prime Minister in Norway from 20 March 1935 to 25 June 1945 as the leader of Nygaardsvold's Cabinet. No buildings have an address on this square.

The Cemetery of Our Saviour (Norwegian: Vår Frelsers gravlund) is a cemetery in Oslo, Norway, located north of Hammersborg in Gamle Aker district. It is located adjacent to the older Old Aker Cemetery and was created in 1808 as a result of the great famine and cholera epidemic of the Napoleonic Wars. Its grounds were extended in 1911. The cemetery has been full and thus closed for new graves since 1952, with interment only being allowed in existing family graves. The cemetery includes five sections, including Æreslunden, Norway's main honorary burial ground, and the western, southern, eastern and northern sections. The Cemetery of Our Saviour became the preferred cemetery of bourgeois and other upper-class families. It has many grand tombstones and is the most famous cemetery in Norway.

The Borgarting Court of Appeal (Norwegian: Borgarting lagmannsrett) is one of six intermediate courts of appeal in the Kingdom of Norway. The Court is located in the city of Oslo. The court has jurisdiction over the counties of Oslo and western Viken. These areas constitute the Borgarting judicial district (Norwegian: Borgarting lagdømme). This court can rule on both civil and criminal cases that are appealed from one of its subordinate district courts. Court decisions can be, to a limited extent, appealed to the Supreme Court of Norway. The court has 62 judges and 45 administrative staff. The chief judicial officer of the court (Norwegian: førstelagmann) is currently Marianne Vollan. The court is administered by the Norwegian National Courts Administration.

The 22 July Centre (Norwegian: 22. juli-senteret) is a learning centre that works with the mediation of memory and knowledge about the terror attacks in Oslo and on Utøya on 22 July 2011.The Centre was opened on 22 July 2015, at the ground floor of the High-rise building in Regjeringskvartalet, and was temporarily moved to Teatergata 10 in 2020 due to renovation work in the Government building complex. The 22 July Centre is located at Teatergata 10, in the Government building complex in central Oslo. The permanent exhibition is titled The Public Conversation About 22 July. The exhibition contains a timeline of the terror attack that took place on 22 July 2011, as well as seven narratives about 22 July. With these narratives the Centre aims to broaden the conversation about 22 July today and in the years to follow. The centre is open every day except Mondays.