Italy is a unitary parliamentary republic in Southern Europe. To the north, Italy borders France, Switzerland, Austria, and Slovenia, and is roughly delimited by the Alpine watershed, enclosing the Po Valley and the Venetian Plain. To the south, it consists of the entirety of the Italian Peninsula and the two biggest Mediterranean islands of Sicily and Sardinia, in addition to many other smaller islands.
The sovereign states of San Marino and the Vatican City are enclaves within Italy, while Campione d'Italia is an Italian exclave in Switzerland. Italy covers an area of 301,338 km2 (116,347 sq mi) and has a largely temperate climate. With 61 million inhabitants, it is the 5th most populous country in Europe. Among the world's most developed countries, Italy has the 4th-largest economy in the European Union, 3rd in the Eurozone and 9th in the world by GDP (IMF, 2012).
Italy is located in Southern Europe and comprises the boot-shaped Italian Peninsula and a number of islands including the two largest, Sicily and Sardinia. It lies between latitudes 35° and 47° N, and longitudes 6° and 19° E.
The country's total area is 301,230 square kilometres (116,306 sq mi), of which 294,020 km2 (113,522 sq mi) is land and 7,210 km2 (2,784 sq mi) is water. Including the islands, Italy has a coastline and border of 7,600 kilometres (4,722 miles) on the Adriatic, Ionian, Tyrrhenian seas (740 km (460 mi)), and borders shared with France (488 km (303 mi)), Austria (430 km (267 mi)), Slovenia (232 km (144 mi)) and Switzerland (740 km (460 mi)). San Marino (39 km (24 mi)) and Vatican City (3.2 km (2.0 mi)), both enclaves, account for the remainder.
Thanks to the great longitudinal extension of the peninsula and the mostly mountainous internal conformation, the climate of Italy is highly diverse. In most of the inland northern and central regions, the climate ranges from humid subtropical to humid continental and oceanic. In particular, the climate of the Po valley geographical region is mostly continental, with harsh winters and hot summers.
The coastal areas of Liguria, Tuscany and most of the South generally fit the Mediterranean climate stereotype (Köppen climate classification Csa). Conditions on peninsular coastal areas can be very different from the interior's higher ground and valleys, particularly during the winter months when the higher altitudes tend to be cold, wet, and often snowy. The coastal regions have mild winters and warm and generally dry summers, although lowland valleys can be quite hot in summer. Average winter temperatures vary from 0 °C (32 °F) on the Alps to 12 °C (54 °F) in Sicily, like so the average summer temperatures range from 20 °C (68 °F) to over 30 °C (86 °F).