Tour to the rune cellar at the Viking ships' museum at Bygdøy Tuesday 7 October 13.00-15: Bus nr. 30 (direction Huk or Bygdøy) from Nationaltheatret, Stortingsgaten, by the underground station, every 15 minutes, 07,22, 37, 52. The tour takes approx. 15 minutes. So you should then take the bus that leaves down town 12.37.