Egeberg was once Oslo's biggest private residence at 1600 square metres over two floors and a tower section.
At the turn of the century, the mansion stood tall surrounded by a big park and with a splendid view over the city and harbour.
The mansion was constructed on behalf of Einar Westye Egeberg (1851-1940) and his wife Birgitte Halvordine (1857-1930).
A car—an open Minerva similar to that of the Norwegian royal family—was acquired in 1912 for Mrs. Egeberg to be able go on a daily drive with the chauffeur.
The fourth floor came from converting the original loft surrounding the billiard room into living area.