Impacts economic, political, and cultural power; larger cities are centers of innovation and economic growth.

Cities are organized into a hierarchy based on size and importance, influencing their functions and impact.

Major player in the global economy, connected to a network of other global cities, center of innovation and creativity.

Large urban region formed by merging of multiple cities, population over 10 million, strong regional influence.

Increases connectivity, economic activity, and cultural exchange, but also leads to challenges like inequality and pollution.

Large size, high density, and social heterogeneity create a unique urban environment with anonymity and complexity.

Important regional and national roles, high quality of life, and centers of innovation and culture.

Pollution, inequality, congestion, and strain on infrastructure and resources.

Facilitates economic activity, cultural exchange, and the flow of information and resources.

They are centers of innovation and creativity, driving trends in finance, media, and the arts.

Large size, high density, and social heterogeneity.

A city with a population of 10 million or more.

A ranking of settlements based on size and importance, from hamlets to megalopolises.

Cities that are major players in the global economy with significant global influence.

A large urban region formed by the merging of multiple cities and suburbs.

The most important global cities, centers of innovation and international institutions.

Important global cities, ranked below Alpha cities, with regional influence.

Important regional centers, less significant in global influence than Alpha or Beta cities.

A diverse mix of people with different backgrounds, jobs, and cultures in a city.

A large city that is the economic, cultural, and political center of a region.

Alpha cities are the most important global cities, while Beta cities are important but ranked below Alpha.

Megacities have populations over 10 million, while small cities have populations under 1 million; megacities have greater global influence, while small cities offer higher quality of life.

Cities have populations of 100,000+, diverse industries; towns are smaller with less infrastructure.

World cities are major players in the global economy, while Gamma cities are important regional centers.

A metropolis is a large city, economic center of a region. A megalopolis is multiple merged cities.

A hamlet is a small, rural settlement, while a city has a large population, high density, and social heterogeneity.

Alpha cities have a major influence on the global economy, while Gamma cities have a more regional economic focus.

Megacities face challenges like pollution and inequality, while smaller cities may face challenges like limited economic opportunities.

World cities have high levels of global connectivity, while regional towns have limited global connections.

Alpha cities have a greater cultural influence on global trends, while Beta cities have a more regional cultural influence.