
The Blue Banana (; ; ; ), also known as the European Megalopolis or the Liverpool–Milan Axis, is a discontinuous corridor of
urbanization
Urbanization (or urbanisation in British English) is the population shift from Rural area, rural to urban areas, the corresponding decrease in the proportion of people living in rural areas, and the ways in which societies adapt to this change. ...
in
Western and
Central Europe
Central Europe is a geographical region of Europe between Eastern Europe, Eastern, Southern Europe, Southern, Western Europe, Western and Northern Europe, Northern Europe. Central Europe is known for its cultural diversity; however, countries in ...
, with a population of around 100 million.
Over time, the region has been referred to by several names, each reflecting its development and significance. Initially, French geographer
Roger Brunet, as the leader of
RECLUS (Network for the study of changes in locations and spatial units), described the area as 'the European Backbone', which depicted an urban corridor extending from Liverpool to Milan.
Characterized by significant industrialization and urbanization, this area has attracted numerous public and private enterprises since the early post-war period, prompting researchers and academics to investigate the factors behind its remarkable development within Europe. It stretches approximately from
North West England through the English
Midlands across
Greater London
Greater London is an administrative area in England, coterminous with the London region, containing most of the continuous urban area of London. It contains 33 local government districts: the 32 London boroughs, which form a Ceremonial count ...
to the
European Metropolis of Lille, the
Benelux
The Benelux Union (; ; ; ) or Benelux is a politico-economic union, alliance and formal international intergovernmental cooperation of three neighbouring states in Western Europe: Belgium, the Netherlands, and Luxembourg. The name is a portma ...
states with the
Dutch Randstad
The Randstad (; "Rim City" or "Edge City") is a roughly crescent- or Circular arc, arc-shaped conurbation in the Netherlands, that includes almost half the country's population. With a central-western location, it connects and comprises the Net ...
and
Brussels
Brussels, officially the Brussels-Capital Region, (All text and all but one graphic show the English name as Brussels-Capital Region.) is a Communities, regions and language areas of Belgium#Regions, region of Belgium comprising #Municipalit ...
and along the German
Rhineland
The Rhineland ( ; ; ; ) is a loosely defined area of Western Germany along the Rhine, chiefly Middle Rhine, its middle section. It is the main industrial heartland of Germany because of its many factories, and it has historic ties to the Holy ...
,
Southern Germany,
Alsace
Alsace (, ; ) is a cultural region and a territorial collectivity in the Grand Est administrative region of northeastern France, on the west bank of the upper Rhine, next to Germany and Switzerland. In January 2021, it had a population of 1,9 ...
-
Moselle
The Moselle ( , ; ; ) is a river that rises in the Vosges mountains and flows through north-eastern France and Luxembourg to western Germany. It is a bank (geography), left bank tributary of the Rhine, which it joins at Koblenz. A sm ...
in
France
France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...
in the west and
Switzerland
Switzerland, officially the Swiss Confederation, is a landlocked country located in west-central Europe. It is bordered by Italy to the south, France to the west, Germany to the north, and Austria and Liechtenstein to the east. Switzerland ...
(
Basel
Basel ( ; ), also known as Basle ( ), ; ; ; . is a city in northwestern Switzerland on the river Rhine (at the transition from the High Rhine, High to the Upper Rhine). Basel is Switzerland's List of cities in Switzerland, third-most-populo ...
and
Zürich
Zurich (; ) is the list of cities in Switzerland, largest city in Switzerland and the capital of the canton of Zurich. It is in north-central Switzerland, at the northwestern tip of Lake Zurich. , the municipality had 448,664 inhabitants. The ...
),
Austria
Austria, formally the Republic of Austria, is a landlocked country in Central Europe, lying in the Eastern Alps. It is a federation of nine Federal states of Austria, states, of which the capital Vienna is the List of largest cities in Aust ...
(
Vorarlberg
Vorarlberg ( ; ; , , or ) is the westernmost States of Austria, state () of Austria. It has the second-smallest geographical area after Vienna and, although it also has the second-smallest population, it is the state with the second-highest popu ...
and
Tyrol) to
Northern Italy
Northern Italy (, , ) is a geographical and cultural region in the northern part of Italy. The Italian National Institute of Statistics defines the region as encompassing the four Northwest Italy, northwestern Regions of Italy, regions of Piedmo ...
(
Milan
Milan ( , , ; ) is a city in northern Italy, regional capital of Lombardy, the largest city in Italy by urban area and the List of cities in Italy, second-most-populous city proper in Italy after Rome. The city proper has a population of nea ...
,
Turin
Turin ( , ; ; , then ) is a city and an important business and cultural centre in northern Italy. It is the capital city of Piedmont and of the Metropolitan City of Turin, and was the first Italian capital from 1861 to 1865. The city is main ...
, and
Genoa
Genoa ( ; ; ) is a city in and the capital of the Italian region of Liguria, and the sixth-largest city in Italy. As of 2025, 563,947 people live within the city's administrative limits. While its metropolitan city has 818,651 inhabitan ...
) in the south.
History

The French geographer Roger Brunet, who observed a division between "active" and "passive" spaces, developed the concept of a West European "backbone" in 1989. He made reference to an urban corridor of industry and services stretching from northern England to northern Italy.
The name "Blue Banana" was dually coined by , and an artist adding a graphic to an article by
Josette Alia in ''
Le Nouvel Observateur''. The colour blue referred to either
the flag of the European Community, or the
blue collars of factory workers in the region.
Brunet saw the "European Backbone" as the development of historical precedents, e.g. trade routes, or as the consequence of an accumulation of industrial capital. In his analysis, Brunet excluded the Paris urban area and other French conurbations because of French economic insularity. His aim was a greater economic integration in Europe, but he felt that France had lost this connection by the 17th century as a result of its persecution of
Huguenots
The Huguenots ( , ; ) are a Religious denomination, religious group of French people, French Protestants who held to the Reformed (Calvinist) tradition of Protestantism. The term, which may be derived from the name of a Swiss political leader, ...
and centralisation in Paris.
Later versions do, however, include Paris.
In 1991, in the context of a study on behalf of the
European Commission
The European Commission (EC) is the primary Executive (government), executive arm of the European Union (EU). It operates as a cabinet government, with a number of European Commissioner, members of the Commission (directorial system, informall ...
in support of its
Regional Policy, researchers criticized the idea of the Blue Banana as a desirable formation, but not an empirical reality, identifying it as the result of regional competition in Europe. Furthermore, their diagram of the Blue Banana had more of a curve, still including Northern Italy, but ending at
Barcelona
Barcelona ( ; ; ) is a city on the northeastern coast of Spain. It is the capital and largest city of the autonomous community of Catalonia, as well as the second-most populous municipality of Spain. With a population of 1.6 million within c ...
. It also included Paris, and had the
Anglo-Scottish border
The Anglo-Scottish border runs for between Marshall Meadows Bay on the east coast and the Solway Firth in the west, separating Scotland and England.
The Firth of Forth was the border between the Picto- Gaelic Kingdom of Alba and the Angli ...
as its northern stem.
A study of the history of the Blue Banana as a concept refers to the commission's study as a mistaken rejection of the Blue Banana from Brunet's original conception. From the research on the commission's behalf, the Blue Banana represented a developed core at the expense of the periphery, whereas Brunet empirically viewed the Blue Banana as a region of development at Paris's periphery, beyond the French borders. There are also considerations for an economically strong European pentagon with its borders
Paris
Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...
,
London
London is the Capital city, capital and List of urban areas in the United Kingdom, largest city of both England and the United Kingdom, with a population of in . London metropolitan area, Its wider metropolitan area is the largest in Wester ...
,
Hamburg
Hamburg (, ; ), officially the Free and Hanseatic City of Hamburg,. is the List of cities in Germany by population, second-largest city in Germany after Berlin and List of cities in the European Union by population within city limits, 7th-lar ...
,
Munich
Munich is the capital and most populous city of Bavaria, Germany. As of 30 November 2024, its population was 1,604,384, making it the third-largest city in Germany after Berlin and Hamburg. Munich is the largest city in Germany that is no ...
and
Milan
Milan ( , , ; ) is a city in northern Italy, regional capital of Lombardy, the largest city in Italy by urban area and the List of cities in Italy, second-most-populous city proper in Italy after Rome. The city proper has a population of nea ...
, with development axes towards the east (
Berlin
Berlin ( ; ) is the Capital of Germany, capital and largest city of Germany, by both area and List of cities in Germany by population, population. With 3.7 million inhabitants, it has the List of cities in the European Union by population withi ...
,
Prague
Prague ( ; ) is the capital and List of cities and towns in the Czech Republic, largest city of the Czech Republic and the historical capital of Bohemia. Prague, located on the Vltava River, has a population of about 1.4 million, while its P ...
,
Trieste
Trieste ( , ; ) is a city and seaport in northeastern Italy. It is the capital and largest city of the Regions of Italy#Autonomous regions with special statute, autonomous region of Friuli-Venezia Giulia, as well as of the Province of Trieste, ...
).
Shift of the Blue Banana
In recent years, the Blue Banana has been shifting north towards Germany, as industrialization draws in new populations towards the Northern European countries. Rapid urbanization led to an increase in slums and poverty stricken areas, which pushed European countries to implement new policies regarding
urban renewal
Urban renewal (sometimes called urban regeneration in the United Kingdom and urban redevelopment in the United States) is a program of land redevelopment often used to address real or perceived urban decay. Urban renewal involves the clearing ...
. Since the United Kingdom's
Action for Cities, France's Reconquête Urbaine and Germany's Städtebauförderung have been put in place, these urbanization policies have built a stronger foundation and better utilized urban spaces. These policies allow countries to expand further, economically, just as Germany has done. Other research by Capoani et al. (2023) examines the role of the UK and Northern Italy as peripheral regions within the Blue Banana, traditionally considered the economic core of Europe. The study compares these regions to central areas of the Blue Banana using indicators such as urbanisation, infrastructure, productivity, and competitiveness. While urbanisation and infrastructure metrics indicate continued integration into Europe's core, weaker economic performance in Northern Italy and the impacts of Brexit on the UK present significant challenges to the cohesion of the Blue Banana.
If current trends of urbanization continue, 72% of the world's population will live in cities by 2050.
This creates a situation where European countries need to take steps to improve their ability to deal with the number of people that will move into the area. As a consequence of the rapid increase of urbanization and an influx of people to cities, the banana is growing instead of shifting.
Due to urbanization, the Blue Banana has become larger in size, branching outwards in a star shape. Despite this, the Blue Banana still remains the core of the conurbation.
Although the Blue Banana may not have the same shape it had decades ago, Europe's largest concentration of people, industry, money, and economic power lie within it.
See also
*
Belt and Road Initiative
*
Demographics of Europe
*
Four Motors for Europe
*
Golden Banana
* French
Empty diagonal
*
List of metropolitan areas in the European Union by GDP
A metropolitan region's gross domestic product, or GDP, is one of several measures of the size of its economy. Similar to gross domestic product, GDP, gross metropolitan product, GMP is defined as the market value of all final goods and services ...
*
Northeast megalopolis – a similar region in the United States
*
Middle Francia
Middle Francia () was a short-lived Frankish kingdom which was created in 843 by the Treaty of Verdun after an intermittent civil war between the grandsons of Charlemagne resulted in division of the united empire. Middle Francia was allocated ...
*
History of Burgundy
*
Kingdom of Burgundy
Kingdom of Burgundy was a name given to various successive Monarchy, kingdoms centered in the historical region of Burgundy during the Middle Ages. The heartland of historical Burgundy correlates with the border area between France and Switze ...
*
Burgundian Circle
*
Spanish Road
*
Rotten Banana – an economically depressed region of Denmark
*
Rhine–Alpine Corridor
References
Sources
*
*
*
{{Use British English, date=December 2024
Economic regions of Europe
Demographics of Europe
Geographical neologisms
Metropolitan areas of the European Union
Urban studies and planning terminology