Monaco

Monaco, officially the Principality of Monaco, is a sovereign city-state and microstate on the French Riviera close to the Italian region of Liguria, in Western Europe. Bordered by France to the north, east and west, it is lapped by the Mediterranean Sea to the south. The principality is home to 38,682 residents, of which 9,486 are Monégasque nationals; it is widely recognised for being one of the most expensive and wealthiest places in the world. The official language is French, although Monégasque (Ligurian-Italian dialect) Italian and English are spoken and understood by a sizeable group. With an area of 2.1 km2 (0.81 sq mi), it is the second smallest sovereign state in the world, after Vatican City.
Source: Wikipedia.