Antarctic tourism is regulated, but the continent still has a tricky relationship with visitors. Not only can cruises to Antarctica be prohibitively expensive (easily $12,575), they also have an unavoidable impact on the environment.

Even the carbon footprint of the journey is substantial, potentially involving multiple long flights. If you can’t resist the lure of a truly once-in-a-lifetime Antarctic voyage, be sure to travel with a responsible and sustainable tour operator.

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