Nonneseter Abbey, Oslo

The Holy Cross Church (Norwegian: Korskirken) was a small medieval parish church for the northern part of the Old Town of Oslo, Norway. The ruin was rediscovered in 1922 and is now a part of Minneparken containing the ruins of the church and the larger St. Hallvard's Cathedral.

The Old Bishop's Palace in Oslo (Oslo Bispeborg) was the residence of the Roman Catholic bishops of Oslo. The estate is located in what is now called Gamlebyen (old town) in Oslo, Norway. Various remnants of the medieval bishop's original palace are still visible.

Grønland Church (Grønland kirke) is a church located in the neighbourhood of Grønland in the borough of Gamle Oslo in Oslo, Norway. Grønland Church congregation was formed in 1861. Grønland Church was consecrated on March 3, 1869, by Bishop Jens Lauritz Arup. The church is characterized its tall and monumental tower surrounded by four smaller spires. The structure is of brick, in neo-Romanesque architectural style. Its architect was Wilhelm von Hanno. He also designed the school, former fire station and former police station, together with the church as a unified group of buildings in Grønland, a district that recently (1859) had been incorporated into Christiania (now Oslo). Grønland Church originally had 1380 seats, which has since been reduced to approx. 800. The church has an historic organ built by Walcker Orgelbau in 1877. It was moved to Grønland Church in 1934. The organ was restored in 1961 by J. H. Jørgensen Orgelfabrik. The church has undergone several restorations, most recently in 1988.The church owned and operated Vestasol camp at Larkollen off Moss. It hosts social gatherings and meetings, and church members work together in the effort to maintain the camp site.Grønland Church is a heritage site and is registered in the Norwegian Directorate for Cultural Heritage.

Oslo Ladegård is a manor house situated at Gamlebyen in Oslo, Norway. It was built of the site of the Old Bishop's Palace in Oslo. The current building was erected in 1725 by Karen Toller. The architectural style is classic baroque, with a high, hipped roof and a symmetrical ground plan. The hall in the cellar dates from the Old Bishop's Palace of the 13th century. The property was expropriated by the government for railway purposes in 1894, and in 1956 it transferred to the City of Oslo. The manor house is used as a museum and concert hall. The estate garden, which went almost down to the seafront during the late 1700s, was reconstructed and reopened in 1999 on the basis of a pattern from 1779. The name comes from this area being used for unloading ships with supplies for Akershus fortress after the founding of Christiania, (now Oslo). The word "lade" means to load in this context.

Minneparken is situated in Gamle Oslo adjacent to Oslo torg at Gamlebyen in Oslo, Norway. The park is bounded by St. Hallvards plass and Oslo gate in the west, Bispegata in the south, St. Hallvards gate in the southeast, Egedes gate in the east and Arups gate in the north. The 3.4 hectare park contains the excavated ruins of several buildings dating from the Middle Ages. Archaeologist Gerhard Fischer (1890–1977), who led an excavation in the 1920s, made a proposal for a memorial park which was approved by the municipality in 1928.

Munkegata was a tram stop on the Gamleby Line of the Oslo Tramway. It is located at the intersection of Oslo gate and Schweigaards gate in Gamlebyen, Oslo, Norway. The station opened on 6 October 1875 as part of the Gamleby Line extension to Oslo Hospital by Kristiania Sporveisselskab. The station was served by lines 18 and 19, which used both SL79 and SL95 trams. It was close on late 2020.

St Halvards plass was a tram stop on the Gamleby Line of the Oslo Tramway. It was located at the square St Halvards plass, on the intersection of Oslo gate and Bispegata in Gamlebyen, Oslo, Norway. The station opened on 6 October 1875 as part of the Gamleby Line extension to Oslo Hospital by Kristiania Sporveisselskab. The station was served by lines 18 and 19, using both SL79 and SL95 trams. The nearest Station is Middelalderparken.

St. Olav's Abbey, Stavanger (Olavsklosteret i Stavanger) was a medieval era house of Augustinian Canons in Stavanger, Norway.

St. Hallvard's Cathedral (Hallvardskatedralen) was the former Oslo Cathedral. It fell into disrepair in the 17th century and is today in ruins. The site is located between Bispegata and St. Halvards gate in Oslo, Norway.

The Old Town of Oslo (Norwegian: Gamlebyen, pronounced [ˈɡɑ̂mɽəbʏn] (listen)) is a neighbourhood in the inner city of Oslo, Norway, belonging to the borough of Gamle Oslo and is the oldest urban area within the current capital. This part of the capital of Norway was simply called Oslo until 1925 while the city as a whole was called Kristiania. Oslo's old town was established with the urban structure around the year 1000 and was the capital of Norway's dominion in 1314. The main Old Town area (i.e. the southern and central parts of Old Town) has several ruins of stone and brick lying above ground, and large amounts of protected culture underground. The core area also has listed 1700s buildings. Towards Ekeberg slope and further up are some 17th and 18th-century wooden houses that are zoned for conservation under the Planning and Building Act, though there exist in the Old Town many four-storey brick houses, built at the end of the 1800s, and some heritage railway buildings from different eras.

Botsfengselet is a former national prison for long-term prisoners in Oslo, Norway. Its location is at the former Åkebergløkka, Grønlandsleiret 41. The prison was designed by architect Heinrich Ernst Schirmer. The prison was built starting 1844 and came into use from 1851. The prison chapel was designed by architect Jacob Wilhelm Nordan and came into use during 1887. In 1970 Ullersmo Prison took over as a prison for long-term prisoners in Norway, while Botsfengselet was rehabilitated and served as a department of the district prison in Oslo (Norwegian: Oslo Kretsfengsel) from 1975. The prison is listed as a protected site.

St. Hallvard's Church and Monastery (Norwegian: St. Hallvard kirke og kloster) on Enerhaugen in Oslo, Norway, not far from the former medieval St. Hallvard's Cathedral, is the location of the largest current parish of the Catholic Church in Norway. The Catholic parish church for eastern Oslo, it was run by the Franciscans until 1 September 2008.