Would you like to see the world's smallest country?
Here you are.
I am not joking, this is a micronation. Population is about 27 people as of 2002, the area is 0.004 square kilometres and it's a WWII sea fort located about 6 miles (10 km) off the Suffolk coast in England.
It is however, not recognised as a sovereign state, probably because this house would fall off the edge of it.
More information about this astonishing "country" can be found here.
I might add the the only way you can get into this country is by a helicopter.