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
Oslo Cathedral () — formerly Our Savior's Church () — is the main church for the Church of Norway Diocese of Oslo, as well as the parish church for downtown Oslo. The present building dates from 1694-1697.
The Norwegian Royal Family and the Norwegian Government use the Cathedral for public events. It was closed for renovation in August 2006 and re-opened with a festive high mass on 18 April 2010.