NANO COUNTRIES

1. Vatican City

Size: 0.17 sq. mi. (0.44 km²)
Population: 783 (2005 census)
Location: Rome, Italy

The size of a golf course, the Vatican City is the smallest country in the world. It's basically a walled enclave inside of Rome, Italy. It's so small that the entire country does not have a single street address. The Vatican City may be small, but it is very powerful.

2. Monaco

Size: 0.8 sq. mi. (1.96 km²)
Population: 35,657 (2006 estimate)
Location: French Riviera on the Mediterranean

Monaco is the second smallest country on Earth (it's roughly the size of New York's Central Park), yet it's the most densely populated (23,660 people per km²). Actually, Monaco used to be much smaller than it is now - about 100 acres were reclaimed from the sea and added to its land size. At the narrowest, Monaco is only 382 yards wide!

3. Nauru

Size: 8 sq. mi (21 km²)
Population: 13,005 (2005 estimate)
Location: Western Pacific Ocean

Nauru is the world's smallest island nation, the smallest independent republic, and the only republic in the world without an official capital. Nauru only has one significant source of income: phosphates from thousands of years' worth of guano or bird droppings.

4. Tuvalu

Size: 9 sq. mi. (26 km²)
Population: 10,441 (2005 estimate)
Location: South Pacific

Tuvalu is basically a chain of low-lying coral islands, with its highest elevation being 16 feet or 5 meters above seal level. With total land area of just 9 square miles, Tuvalu is not only a teeny tiny island in the Pacific Ocean, it may not even exist in the next 50 years

5. San Marino

Size: 24 sq. mi. (61 km²)
Population: 28,117 (2005 estimate)
Location: North-central Italy near the Adriatic coast.

With the formal name of The Most Serene Republic of San Marino, it's not surprising that San Marino has got lots of charms. Founded in AD 301.