Lambertseter farm
It was in the 17th century that the name got its first part, when a farmer named Lambert used the farm from 1611 to 1641. Now the farm is owned by Oslo municipality, and the farmhouse from 1825 still stands at the address Langbølgen 2C.
The area around the farm was developed with housing cooperatives in The Post-World War II period. Marmorberget was the first housing cooperative, and people moved in here in July 1952. Lambertseter was also the name of an administrative district in Oslo municipality from 1988 to 2004. Today, Lambertseter belongs to the Nordstrand district.

Ideal location for broadcasting
When broadcasting came to Norway in the early 1920s, powerful transmitters were needed to receive Europe's many stations. The telegraph authorities singled out the Lambertseter plateau, with its 155 meters above sea level, as a suitable location for such transmitters.
The broadcasting station at Lambertseter was completed in 1929, designed in a new "funkis" (functionalism) style by Thorvald Astrup. The station's masts were 150 meters high and were Northern Europe's strongest transmitters until 1954, when the Kløfta masts were completed.

The Lambertseter line
The Lambertseter line opened in 1957. It was incorporated into the city's line network and was then run by tram instead of the metro as it is today. The line was initially combined with the Kjelsås tramway, but Jernbanetorget became its terminus in 1960.
In 1966, the Lambertseter line was converted to a metro. The line had previously functioned as a branch from the Østensjø line at Høyenhall, but after the conversion to metro, the branch was added after Helsfyr.
In 1992, the Lambertseter line became the first line to be connected with a western line at Stortinget station. Gradually throughout the 90's, the other metro lines in Oslo were also connected. The stretch from Stortinget to Bergkrystallen is 10.5 kilometers long and has 15 stations, five of them in tunnels.

External films
Watch the film "Nye forstadsbaner i Oslo, 1958" on youtube.com