Vatican City, Monaco, Nauru, Tuvalu and San Marino make up the world's smallest countries. The biggest of the group, San Marino, is only 25 square miles.

It has a population of 12,769 people which makes it the third smallest country in the world. Nauru gained independence in 1968. The country is 4000 kilometres northeast of Sydney. 4.

Full of beautiful landscapes and historical treasures, these are the 10 smallest countries in the world. And you can visit ...