The metro station is in the Common Tunnel used by all lines under the city centre.

The station is 0.5 kilometres (0.31 mi) from Stortinget and submerged 5.2 metres (17 ft) below sea level.

It was originally operated by Kristiania Elektriske Sporvei and ran from the Oslo East Station to Majorstuen.

[4] In 1924, the tram companies were merged to create Oslo Sporveier, which now operated the station.

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