Maria Bebudelses is a very small Orthodox church known locally as The Day of Judgment Church. The Catholic Apostolic congregation had it built in 1892, which mostly died out, leaving the church unused for several years. It was taken over by the Greek-Orthodox congregation in the 1980s and is now sometimes lent to the Serbian Orthodox community to hold services.

St. Olav's Roman Catholic Cathedral was the first Catholic church in Oslo. The church was designed in a Neo-Gothic style by architect H.E. Schirmer. Queen Josephine donated the altarpiece, a copy of Raphael’s work.

Trefoldighets Church is the largest church in Oslo, with a minimum of three architects taking part in its design. It has a cross crowned at the center of a copper-plated dome and a lantern at the apex. The church belongs to the Trinity congregation and was consecrated in 1858. In 1883 a staircase was added to the entrance and in 1956 the interior was remodeled.

Margaretakyrkan, the Swedish church is situated in the shadows of several municipal buildings, close to Oslo’s library. The construction is in a neoclassical style, built out of coated bricks and designed by architect Lars Israel Wahlman. The church was consecrated in 1925 by Bishop Nathan Söderblom.

St. Edmund’s Church is a minimalist style architecture tightly squeezed between industrial buildings of the area. It is a non-denominational church offering a variety of events, including concerts, the Ladies’ Guilds and wonderful performances by its choir.

This church was abandoned for some years and nearly destroyed by modern urbanization. In February 2000 the church was re-inaugurated as a cultural church, the bell tower being the only remaining feature of the original construction.