The nature and characteristics of world cities, including their role in the global hierarchy, the functions they perform, and their interconnections

What this dot point is asking

NESA expects you to understand the global urban hierarchy: a small number of cities concentrate global economic, cultural, and political influence, with the rest of the world's cities distributed beneath them. Sydney is Australia's representative world city. Strong responses are precise about the functions that distinguish world cities, the GaWC classification, and the interconnections between cities.

The concept of world cities

The term "world city" was used by geographer Patrick Geddes in 1915. It was given its modern meaning by:

• John Friedmann (1986). "The World City Hypothesis" identified a hierarchy of cities at the centre of global capital flows.
• Saskia Sassen (1991). The Global City: New York, London, Tokyo focused on the role of advanced producer services (finance, legal, accounting, consulting) in global cities.
• Globalization and World Cities Research Network (GaWC, 1998-). Loughborough University-based network mapping the global urban hierarchy through producer-services connectivity data.

A world city (or "global city") concentrates the strategic functions of the global economy. The opposite of a world city is a town whose function is limited to its immediate hinterland.

Functions of world cities

1. Headquarters of transnational corporations

The top-tier world cities host the most TNC headquarters. New York and London together hold around 25 percent of Fortune Global 500 company headquarters. Tokyo, Beijing, and Paris are next. Sydney hosts the Asia-Pacific headquarters of Apple, Google, Microsoft, IBM, and Amazon Web Services for the region.

2. Advanced producer services

The high-value services that support global business: investment banking, corporate law, accounting, management consulting, advertising, and IT services. Sassen identified this concentration as the defining function of world cities. London's financial district (City of London plus Canary Wharf), Manhattan's financial sector, and Tokyo's Marunouchi district are the canonical examples.

In Sydney, the CBD between Circular Quay and Wynyard hosts the major Australian banks, Macquarie Group, the Australian Securities Exchange (ASX), Deloitte, PwC, EY, KPMG, and the Australian arms of major global law firms.

3. Financial markets

World cities concentrate equity markets, debt markets, currency markets, and derivatives markets. The ASX has a market capitalisation of around $2.7 trillion. London's LSE is around$3 trillion; New York's NYSE plus NASDAQ is around $45 trillion. Currency trading is concentrated in five world cities (London, New York, Singapore, Hong Kong, Tokyo) that handle more than 75 percent of daily FX volume.

4. Global transport hubs

International airports with significant transit traffic. Major deep-water ports. Sydney Airport handles around 43 million passengers in normal years; Sydney's Port Botany handles around 3 million TEU of containers. Top-tier world cities (London, New York, Hong Kong, Dubai, Tokyo, Beijing, Frankfurt) handle global flight networks.

5. Cultural production

Media, film, fashion, design, art, music. Hollywood and Bollywood for film. Paris, Milan, New York, and Tokyo for fashion. London for music. Sydney is a regional centre rather than a global one (the ABC, Channel 9, Channel 10, the Sydney Opera House) but has significant production in screen, design, and creative industries.

6. Higher education and research

World-class universities, research centres, and innovation ecosystems. The University of Sydney, UNSW Sydney, and the Macquarie precinct host significant research activity. Sydney is in the global top 30 for research output but well below Boston, San Francisco, London, or Singapore in research-driven economy.

7. Diplomacy and international institutions

UN agencies, IMF, World Bank concentrate in New York, Washington, Geneva, Brussels, and Vienna. Australia's diplomatic role is moderate; Sydney and Canberra host embassies and consulates but few intergovernmental headquarters.

The GaWC hierarchy

GaWC classifies cities based on the strength of their producer-services connectivity. Current classification (2024):

• Alpha plus plus (the top 2). London, New York.
• Alpha plus (8). Tokyo, Hong Kong, Singapore, Shanghai, Dubai, Beijing, Paris, plus Sydney and Mumbai close behind.
• Alpha (around 20). Sydney, Frankfurt, Madrid, Toronto, Mexico City, Chicago, Los Angeles, Seoul, Mumbai, Sao Paulo, Buenos Aires, Milan, Brussels, Bangkok, Moscow, Warsaw, Kuala Lumpur, Jakarta, Istanbul, Johannesburg.
• Alpha minus (around 30). Including Melbourne, Auckland, Bogota, Lisbon, Vienna.
• Beta and Gamma tiers. Around 200 further cities, including Perth, Brisbane, Adelaide, Christchurch.

Sydney as a world city

Sydney sits in the Alpha tier (sometimes classified Alpha plus). Key characteristics:

• Population. Greater Sydney metropolitan area: 5.4 million (ABS 2023). Australia's largest city.
• Economy. Around $568 billion GDP in 2022, around 27 percent of Australia's national output.
• Financial centre. Largest financial sector in Australia. Around 35 percent of Australian financial sector GDP. Host to the ASX, Macquarie Group, Westpac, CBA, AMP.
• APAC TNC hub. Apple, Microsoft, IBM, Amazon, Google APAC regional headquarters.
• Tourism. Around 4 million international visitors in 2019 (pre-COVID). Sydney Opera House, Harbour Bridge, Bondi.
• Air connectivity. Sydney Airport handles direct flights to over 100 cities. Limited direct connection to Africa and South America compared to London/Dubai.
• Universities. University of Sydney (founded 1850, oldest in Australia), UNSW Sydney, Macquarie University, University of Technology Sydney. Sydney is Australia's largest higher-education centre.
• Creative industries. Surry Hills, Chippendale, and Marrickville creative clusters. Film and TV production at Fox Studios (Moore Park).

Limitations of Sydney's world city status

• Population is small by global standards. Tokyo (37 million), Delhi (33 million), Shanghai (29 million), Sao Paulo (22 million), Mumbai (21 million) dwarf Sydney.
• Australia is a peripheral economy with limited intra-regional integration compared to European cities or East Asian metropolises.
• Sydney's role is regional (APAC) rather than truly global. Decisions about Asia-Pacific business are often made in Sydney; decisions about global business rarely are.

Interconnections between world cities

World cities are more closely connected to other world cities than to their national hinterland. Measured by:

• Air traffic. Sydney-Singapore is one of the busiest international routes for Australia. Sydney-LAX, Sydney-Tokyo, Sydney-Auckland are similar.
• Telecommunications. Submarine cable landings concentrate in world cities.
• Foreign direct investment flows. Concentrated between major world cities.
• Corporate office networks. The TNCs operating in Sydney are headquartered in New York, Cupertino, Redmond, and Tokyo.
• Migration of skilled labour. Sydney attracts skilled migrants disproportionately from other world cities.

The interconnections produce a "space of flows" (Manuel Castells) where world cities are functionally closer to each other than to the rural regions of their own nation.