Hong Kong vs Tokyo

Population density shows how cramped or spread out inhabitants are. Cities or countries with high population densities can be considered overpopulated, which can be a problem if the infrastructure is underdeveloped. Source: Wikipedia, 2021.

Populous cities or countries usually offer better employment opportunities because of their large economies. Big cities attract companies and business investment, and are usually important cultural centers and research hubs. Source: Wikipedia, 2021.

Cities or countries with younger population have usually better development perspectives. Young societies are more dynamic and creative. Source: Wikipedia, 2021.

The average population growth rate reflects the annual increase or decrease in population. Currently, the world’s population is growing at a rate of approximately 1.07% per year. The higher the growth, the more dynamic society feels. Source: Wikipedia, 2021.

The percentage of female residents, according to the city's official statistics. Source: Wikipedia, 2021; UNData, 2021.

The percentage of male residents, according to the city's official statistics. Source: Wikipedia, 2021; UNData, 2021.

Low unemployment rate indicates better career opportunities and economic growth. Source: Wikipedia, 2021; city's official stats, 2021.

Public health care is more affordable for an average citizen and usually guaranteed for everyone. Source: city's official website, 2021.

The average rent of a single-bedroom apartment located in the city center. This indicates how much of your salary would be allocated to rent expenses, and the general cost of living of the city. Source: numbeo.com, 2021.

Source: Wikipedia, 2021; city's official stats, 2021.

Universities, as centers of higher education and research, are important contributions to a city’s development. Source: Wikipedia, 2021.

The Gross Domestic Product (GDP) reflects the value and productivity of an economy. It measures the market value of all the final goods and services produced annually. To reflect the differences in the cost of living and inflation rates, we show the GDP at purchasing power parity (PPP). Sources: Wikipedia, CIA World Factbook, 2021.

The Gini coefficient is a measure of dispersion, in this case used to show the variation in income. A Gini coefficient of zero expresses perfect equality. A Gini coefficient of one expresses maximal inequality. Lower income inequalities indicate a more equal distribution of wealth and better opportunities for the average citizen. Source: Wikipedia, 2021.

The Big Mac Index is published by The Economist as an informal way of measuring the purchasing power parity (PPP) between two currencies. The Big Mac PPP exchange rate between two countries is obtained by dividing the price of a Big Mac in one country (in its currency) by the price of a Big Mac in another country (in its currency). Source: Economist, 2021.

Source: Wikipedia, 2021.

Source: Wikipedia, 2021; WMO, 2021.

Source: Wikipedia, 2021; WMO, 2021.

Source: Wikipedia, 2021; city's official website, 2021.

Source: Wikipedia, 2021; city's official website, 2021.

There are mountains at a distance of maximum 100 kilometers (62 miles) from the city. Mountains are considered to have an elevation of at least 1,000 m (3,300 ft). Source: Wikipedia, 2021; city's official website, 2021.

Source: Wikipedia, 2021; WMO, 2021.

Source: city's official website, 2021.

Humidity is the amount of water vapor in the air. High relative humidity reduces the effectiveness of sweating in cooling the body by reducing the rate of evaporation of moisture from the skin. In general, higher humidity makes climate harder to stand for people. Source: Wikipedia, 2021; WMO, 2021.

Source: Wikipedia, 2021; city's official website, 2021.

With more large sports facilities (20,000+ seats), a city is able to organize more important sporting events. Source: worldstadiums.com, 2021.

Source: Wikipedia, 2021.

Source: Wikipedia, 2021; city's official website, 2021.

Cost of the monthly public transport ticket indicates affordability of public transportation for an average inhabitant. Source: Wikipedia, 2021; city's public transport website, 2021.

A bike-sharing system makes a city more eco-friendly, shows the city’s pro cycling attitude, and provides new touristic opportunities. Source: Wikipedia, 2021.

A cheaper single ticket will allow you to move through the city for less money. Whether you are a visitor or a resident, it will help your economy. Source: Official city's public transport website, 2021.

The presence and number of airports shows how good is connection of city with different international destinations and its international accessibility. Source: Wikipedia, 2021.

In general, cities with possibility of drinking alcohol in public places have more thriving nightlife. It's easier to organize parties in public places. Source: Wikipedia, 2021; city's official website, 2021.

Number of billionaires can indicate if the city has significant agglomerations of personal wealth. Source: Forbes, 2021.

The Global Cities Index is unique in that it measures global engagement of cities across five dimensions: business activity, human capital, information exchange, cultural experience and political engagement. Source: ATKearney, 2021.

Cities with stock exchanges are usually important financial centers influencing international or national’s financial markets. Source: Wikipedia, 2021.

National capital status indicates that a city is of great importance for political and diplomatic matters. Source: Wikipedia, 2021.

Source: city's official website, 2021.