If you want to go somewhere truly unique, where few people have gone before you, take a cruise to Antarctica. The ice-encased continent is largely unexplored and yet, there is plenty to do here. Antarctica expedition cruises let you float past massive icebergs, hike over snowy trails, kayak in the fjords, and more. You can get up-close views of penguins, seals, native birds and maybe a few whales too. There are...