A modern city is a city that is able to support a large population concentrated in a limited space. In order for a modern city to function well, it needs several elements.
A well-functioning modern city should have a working local government and bureaucracy. Without this, the ability to make decisions based on the public good and to carry out these decisions would be hampered.
Transportation in a modern city is also crucial. People need to be able to get to jobs, markets, educational centers, and leisure activities with relative ease. This is important in order to have a functioning local economy. Modern cities should have efficient forms of both public and private transportation in order to facilitate this.
Most modern cities are centered around a business district. This is the place where many people go to work and it is the economic driver of the city. This is usually where the city government and major cultural institutions are also found.