On a map of Europe the Alps look like a single wall between Italy and the rest of the continent. In reality they form a curved arc that starts near the Mediterranean coast, swings north and then runs east almost to Vienna, and they are shared by more countries than most people can name on the first try.
The countries that share the Alps
The most useful official definition comes from the Alpine Convention, the treaty signed in Salzburg in November 1991 to protect the range. Its perimeter covers 190,711 square kilometres and about 14.8 million inhabitants, spread across eight states. The Convention’s own figures show how unevenly the mountains are divided:
- Austria holds the largest share of the area, 28.6 percent.
- Italy follows with 27.3 percent of the area and the largest share of the population, 29 percent.
- France has 21.4 percent.
- Switzerland has 13.2 percent, even though it is the country most people picture first.
- Germany has 5.8 percent, a thin strip along its southern border in Bavaria.
- Slovenia has 3.5 percent in its north-west.
- Liechtenstein and Monaco complete the list with tiny shares.
Monaco surprises people, but it sits where the arc meets the sea, and its inclusion is a reminder that the Alps begin at the coast rather than inland.
How the arc runs
Starting in the south-west, the mountains rise behind the Riviera between France and Italy and climb northward along that border. Around the Mont Blanc massif, on the French and Italian frontier, the arc turns east. From there it runs through Switzerland and the north of Italy, then across Austria, with a narrow fringe in southern Germany. In the far east it fades into lower hills toward the Vienna Basin and into Slovenia.
The shape explains why the Alps touch so many climates. The southern side looks toward the Mediterranean and the Po Valley, while the northern side faces the plains and plateaus of central Europe.
Western Alps and Eastern Alps
Geographers usually split the range into two halves, with the dividing line running roughly from Lake Constance south toward Lake Como. The Western Alps, in France, western Switzerland and north-west Italy, hold the highest summits, including Mont Blanc and the peaks around Zermatt. The Eastern Alps, across eastern Switzerland, Austria, the Italian Dolomites and Slovenia, are generally lower but wider, with long parallel ranges separated by deep valleys.
The Dolomites in north-east Italy deserve a separate mention on any map. Their pale limestone towers look nothing like the granite and ice of the western peaks, and they are one of the reasons the eastern half attracts as many visitors as the west.
The rivers that start here
The Alps are a water tower for a large part of Europe. Rivers that rise in or near the range include:
- The Rhine, which starts in the Swiss Alps and flows north to the North Sea.
- The Rhône, which drains the Valais in Switzerland and runs through Lake Geneva to the Mediterranean.
- The Po, which collects water from the southern slopes and crosses northern Italy to the Adriatic.
- The Inn, which carries Alpine water from Switzerland through Austria into the Danube.
Large lakes sit where glaciers once carved the valleys: Geneva, Constance, Como, Garda, Maggiore. On a map they mark the edges of the range almost as clearly as the summits do.
Languages along the arc
The Alps are also one of the most varied language maps in Europe. French is spoken on the western slopes and in western Switzerland, Italian on the southern side and in the Swiss canton of Ticino, and German across most of Switzerland, Austria and Bavaria. Slovene is spoken in the far east, and Romansh survives in the valleys of Graubünden in eastern Switzerland. Place names often change with the language as you cross a pass, which is worth knowing when a road sign does not match your map.
The passes that hold it together
For most of history the Alps were crossed through a handful of passes, and those routes still shape transport today. The Brenner links Austria and Italy and is one of the lowest major crossings. The Great St Bernard and the Simplon connect Switzerland with Italy, and the Gotthard sits at the centre of Switzerland’s north-south axis. Many of these crossings now have long tunnels beneath them, but the old roads over the top still close in winter, which is worth knowing before planning a drive between November and spring.
Reading the Alps alongside the rest of Europe
The range is the hinge between several regions covered on this site. To the west and north, the map of Western Europe shows how France, Switzerland and Germany meet around it. To the south, the map of Southern Europe places the Italian side in context. East of Slovenia the mountains continue as a separate system, the Dinaric Alps, which belong to the map of the Balkans rather than to the Alps proper. And for a sense of scale, the map of the Himalaya shows what a much larger collision of continents produces.
The Alpine Convention publishes the official perimeter and the share held by each country on its contracting parties page, which is the most reliable reference if you need exact figures.
