Monaco , officially the Principality of Monaco , is a sovereign city state on the French Riviera

French Riviera

The Côte d'Azur, pronounced , often known in English as the French Riviera , is the Mediterranean coastline of the southeast corner of France, also including the sovereign state of Monaco...

. It is bordered on three sides by its neighbour, France

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

, and its centre is about 16 km (9.9 mi) from Italy

Italy

Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

. Its area is 1.98 km² (0.764482274013219 sq mi) with a population of 35,986 as of 2011 and is the most densely populated country in the world. Monaco boasts the world's highest GDP nominal per capita at $151,630.