Helsinki Cathedral. Photo: Helsinki City Tourist & Convention Bureau / Paul Williams

Helsinki’s downtown Ice Park. Photo: Helsinki City Tourist & Convention Bureau / Paul Williams

Ice swimming in Helsinki. Photo: Helsinki City Tourist & Convention Bureau / Comma Image Oy

Helsinki Railway Station. Photo: Helsinki City Tourist & Convention Bureau / Ofelia de Pablo

Helsinki Cathedral and Neoclassical city center. Photo: Helsinki City Tourist & Convention Bureau / Niko Soveri