St. Hanshaugen
To the southeast of the park is Oslo’s oldest building – Aker Kirke, built around 1100, but restored from ruins around 1860, and then again in the 1950s in a more authentic style. Next to the church is the cemetery Vår Frelsers gravlund, created in 1808 as a result of the great famine and cholera epidemic of the Napoleonic Wars. The nearby area around Damstredet and Telthusbakken is interesting since it retains the small town character of Oslo in the first part of the 19th century.
Arno Berg
Berg was the first head of the department for cultural heritage in Oslo, serving from 1956 to 1960. The preservation of Basarhallene at Oslo Cathedral, buildings in Homansbyen and Karl Johans gate, as well as the restoration of Oslo Ladegård and Akershus Fortress were all focuses of his attention. Among his publications are "Selskabet for Oslo Byes Vels historie 1811–1861" from 1936, "Vår Frelsers kirke " from 1950, and a two-volume work on Akershus Fortress. 
Arno Berg was an honorary member of several organizations and was invited to be a member of the Norwegian Academy of Science and Letters. He was awarded the Medal of St. Hallvard and was decorated Commander of the Order of St. Olav. Arno Bergs plass in Oslo was named in his honor. A bust of Arno Berg by sculptor Arnold Haukeland was unveiled at Oslo Ladegård in 1972.