I don’t think you can visit Iceland without enjoying at least one geothermal spa. And the two names that keep popping up are Blue Lagoon and Sky Lagoon. After spending time at both, I can tell you they're not so much competitors as they are completely distinct experiences. They're built around different ideas of what a spa day should feel like.

When I tell people I’ve been to Antarctica, the reactions are usually a mix of awe, curiosity, and “Wait, how did you do that?” And honestly, it’s a fair question. Visiting the sixth continent (Australia was my seventh) isn’t as simple as hopping on Kayak and clicking “book.” With so many expedition ships, varying itineraries, and a wide range of price points (some that seem too good to be true - because they are), it’s a destination where you really want to get it right.