4. Little Europe: Five Micro-Countries

Don't blink as we blitz through Europe's tiniest countries: Vatican City, the planet's smallest country, boasts the its biggest church. The fairy-tale princedom of Monaco lures high rollers with its fancy casino and glamorous views. Italy's last independent hill town, San Marino, still looks formidable, as does the castle-guarded principality of Liechtenstein. And amid the rugged beauty of the Pyrenees, tiny Andorra draws shoppers and hikers alike.