It's said to be the southernmost city on the globe, located at the southern tip of Argentina [source: Aurora]. Ushuaia is closer to the Antarctic Circle than Tasmania, South Georgia and Stewart Island. It would seem a likely spot to see the lights.
And it is -- but when it comes to the aurora australis, "likely" means "possible." Still, the Southern Lights do appear over Ushuaia, and it's remarkably easier to get there, stay there and tour there than, say, South Georgia Island. Or the South Pole.
In winter time, Ushuaia is in darkness for about 17 hours a day, which leaves the door open for sightings -- if the timing and the weather are right [source: Patagonia]. The weather here, however, is rather unstable, throwing another factor into the luck pile [source: Patagonia].
Maybe that's what it's about, though -- adventure, luck and the surprise of a sky suddenly exploding with ribbons of neon light. The aurora australis can be tough to catch, and even great efforts may fail. For some aurora seekers, that's part of the allure.
For the rest, and for those who try valiantly and still miss the show, the Aurora Borealis is waiting up North -- easier to get to, more likely to appear when people are watching and a practical mirror to the lights of the south. The only difference, in the end, is latitude.
For more information on the auroras, the polar regions and atmospheric phenomena, check out the links on the next page.