It is possible to see the polar lights on both poles. However, the territories around the North Pole, including Russia, Norway, Sweden, Finland, the United States (Alaska), Denmark (Greenland) and Iceland, are more densely populated.
The period between the autumnal and vernal equinoxes (September 21‒March 21) is the traditional Aurora Borealis “hunting season.” At northern latitudes, it gets dark very early in the winter.
It is possible to see the southern lights (Aurora Australis) from mid-March through mid-September, that is, during the winter in the Southern Hemisphere. The residents of Australia regularly watch it around the Snowy Mountains and Mount Kosciuszko, on Tasmania Island and on the Antarctic coast. The “residents” of Antarctica, the coldest continent, also can see it.
Of course, it is possible to see the celestial lights from ships at sea, but it is difficult to capture because of the pitching and rolling.
There is possibly another place to observe this phenomenon: from the portholes of an orbiting space station, rather than from the Earth. Many astronauts have taken images of the polar lights from an altitude of over 400 km. Significantly, the Sun, the clouds and the distorting influence of the lower atmospheric layers cannot interfere with observations.