One of the most extraordinary features of Finland is light. When the endless sunny summer nights give way to winter without sun, northern lights illuminate the sky of their magical show.

The more you head north, the greater your chances of seeing the Northern Lights: sometimes they show up to 200 nights a year in Finnish Lapland. As for Helsinki and southern Finland, the bright lights of holes manifest themselves there around 20 nights per year; they are, however, visible if one keeps away from city lights.

To see the northern lights, you have with sufficient dark conditions and the sky cleared, making the late autumn, winter and early spring (September to March) the period the more favorable for their observation. It is good to remember that the best time is between one to two hours before to two hours after midnight. The light burst can be limited to a period of 20 seconds, but the show may as well go on for hours.

How the Northern Lights do they happen? A Sami legend, the light bursts are due to sparks projected in its path by a celestial fox running full speed on the snowy peaks, hence the modern Finnish word "revontulet" (the fox lights), which serves to designate the phenomenon.

Scientists explain in turn these luminous apparitions in referring to "solar winds that send electricity saturated particles toward Earth, where an energy discharge and bright breakthroughs on impact of particles with the atmosphere".