What is the oldest building in Oslo?
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.
Oslo Cathedral School
Schola Osloensis, known in Norwegian as Oslo katedralskole ("Oslo Cathedral School") and more commonly as "Katta" is a selective upper secondary school located in Oslo, Norway. The school offers the college preparatory "studiespesialisering" (literally: "specialization for studies") of the Norwegian school system. Oslo Cathedral School is one of four schools in Norway which can trace its origins directly to the Middle Ages and is generally regarded as one of the most prestigious schools in Norway. It celebrated its 850-year anniversary in 2003.