Megalopolis (city Type) - Europe

Europe

"Blue Banana" (also known as Hot Banana, Dorsal, European Megalopolis or European Backbone): Liverpool–Manchester–Leeds–Birmingham–London–Brussels–Antwerp–Amsterdam–Rotterdam–The Hague–Luxembourg–Rhine-Ruhr–Frankfurt am Main–Munich–Stuttgart–Basel–Zürich–Turin–Milan (110,000,000).

• Greater London (Larger Urban Zone) - London and surrounding urban area of South East England (14 million).
• Chain of large towns in Northern England and English Midlands - Blackpool (261,088), Preston (335,000), Blackburn (136,655), Burnley (149,796), Liverpool (1,365,900), Warrington (158,195), Manchester (2,629,400), Leeds (2,161,200), Sheffield (1,299,400), Chesterfield (100,879), Mansfield (158,114), Nottingham (666,358), Derby (236,738), Leicester (441,213), Nuneaton (132,236), Coventry (336,452), Birmingham (2,284,093), Telford (138,241), The Potteries (362,403) - Total (13,283,000).
• Rhine-Ruhr in the western part of Germany, including Cologne, Düsseldorf, Dortmund (11.5 million).
• Flemish Diamond - Brussels, Antwerp, and the central provinces of Flanders (5.5 million).
• The Randstad in the Netherlands is a conurbation with approximately 7.5 million inhabitants. It consists of the four largest Dutch cities (Amsterdam, Rotterdam, The Hague and Utrecht), and the surrounding areas. If the adjacent Brabantse Stedenrij (Eindhoven, Tilburg, Breda, 's Hertogenbosch and Helmond) is included, its population would be around 9.5 million.
• Milan metropolitan area in Italy - With 3,7 million. According to OECD, with approximately 7.5 million. Potentially some parts of the Swiss Canton Ticino can be considered within the metropolis, thus making it a transnational city; however, this is not recognized by the OECD definition.

"Golden Banana" (or European Sunbelt): Genoa–Monaco–Nice–Toulon–Marseille–Nîmes–Montpellier–Narbonne–Perpignan–Girona–Barcelona–Tarragona–Castellón de la Plana–Valencia–Alicante–Murcia (Approx. 20–25 million. Some also include Turin, Toulouse–Andorra–Manresa, plus Zaragoza–Lleida and even the Balearic Islands and Madrid, increasing all up to 30 million).

• Genoa metropolitan area in Italy (1.5 million).
• Nice metropolitan area in France (1.1 million).
• Toulon metropolitan area in France (0.6 million).
• Marseille metropolitan area in France (1.8 million).
• Montpellier metropolitan area in France (0.5 million).
• The "Mediterranean Axis" in Spain and southeast France, Perpignan–Girona–Barcelona–Tarragona–Castellón de la Plana–Valencia–Alicante–Murcia (11.5–15 million).

• Perpignan metropolitan area (0.3 million).
• Greater Barcelona: Catalonia's coastal area (6.1 million).
• Valencia metropolitan region - Valencia–Sagunt–Castellón de la Plana (2.5 million).
• Murcia-Alicante metropolitan region - Benidorm–Alicante–Elche–Torrevieja–Orihuela–Murcia–Cartagena (2.5 million).