A Mental Floss feature highlights six of the world's smallest nations that can be traversed within a single day—Liechtenstein, San Marino, Tuvalu, Nauru, Monaco, and Vatican City. Despite their size, ...

Touring an entire country in one day sounds impossible until you learn about these tiny places.

The Vatican City in Rome, Italy is the home of the Pope and 450 citizens. With a population of just 800, its sovereignty was recognized by Italian government under Lateran Treaty on 11th February 1929 ...