Free events: Almost every town in Norway has some sort of summer shindig, elements of which are invariably free. Nationally, though, the big one is Nasjonaldagen/Grunnlovsdagen (National Day/Constitution Day) on 17th May which sees many processions and much flag-waving.
Northern Lights: At once eerily disconcerting and bewitchingly beautiful, the aurora borealis flicker across northern Norway’s winter firmament at irregular and unpredictable intervals.
Ice skating: Most towns and cities have a rink where you can skate for free in winter. In Oslo, for example, a floodlit skating rink, Narvisen, is created in front of the Stortinget, beside Karl Johans gate. Admission is free and you can rent skates on the spot at reasonable rates.