World War I involved 32 nations from 1914 to 1919. It redrew the world map and reshaped many borders in Europe. The collapse of the Russian Empire created Poland, the Baltics, and Finland.

As the war in Ukraine rages, Germany and the Baltic states have warned Vladimir Putin's aggression could spread in Europe.

Thanks to Europe’s Schengen Area, whose 29 countries abolished border controls in 1995, it’s a seamless experience to ski from one country to another. The Portes du Soleil domain gives you the ...