While there are books, and brochures and videos and often you think you can travel the world just consuming media. But educating yourself about different countries is still not the same as actually experiencing them. It's not always the tourist sights, or the big things that surprise you the most. It's the small things that you were not even prepared for. Like how snow can feel different depending on the temperature and humidity (and how there are tens of different words of different kind of snow in Nordic languages like Finnish, Swedish and Icelandic!). Or that in the North the winters are dark, even during the day, and the snow makes all the difference because it reflects light. People crave for the snow, because it makes it less dark! (And on the opposite, Scandinavian summer nights are nightless as the sun doesn't set).
It's not just the sun that's different on the other side of the world. It's everything about the nature and animals too. The squirrels of Sweden looked completely different than the ones we had in New York! The forests were full of birch trees, and birds had different kind of birds swimming in them too. When you pay attention to small nature details during your travels, you can teach so much about nature and our mother Earth to the kids.