The banner showing "the blue of our lakes and the white snow of our winters" was made official shortly after independence in 1918.
Find out more about the Finnish national anthem, which was first sung in Swedish.
When the ice keeps their boats moored in the harbour, border guards use a hovercraft to speed across the frozen ocean on a cushion of air. One afternoon they parked it so that curious onlookers could get a closer view. Photo: Tim Bird
Layers of snow and ice display a fascinating variety of textures. Photo: Tim Bird
If you can walk it or ski it, you can probably bike it. Photo: Tim Bird
Helsinki harbour, a big cruiser waiting to depart either to Stockholm or to Tallinn.
Viikki nature reserve area in the city of Helsinki, Finland