The polar night can only be experienced inside the polar circles and can therefore only be experienced in seven different countries (not counting Antarctica); Sweden, Norway, Finland, Russia, Greenland, US and Canada. To be perfectly strict, Iceland also has a tiny fraction of land within the Arctic circle.
Contrary to common belief, the polar night is not just dark, cold and horrible. To me, this is by far the most beautiful time of the year. A typical day during the polar night period begins with a long slow dawn in different hues of deep blue colours peaking with some orange-yellowish glow where the Sun should have been. Just when you believe the sun is about to rise above the horizon, a long slow dusk starts, turning the snow-covered mountains pink against the cold blue light. Then the Moon and the stars start to rise over the snow-covered landscape and the northern lights begin to play and dance like green and purple ribbons in the sky.
Tromsø during polar darkness