Megapolis
Infrastructure
the basic physical and organizational structures and facilities (e.g., buildings, roads, and power supplies) needed for the operation of a society or enterprise.
Urbanization
the growth of cities
Skyline
the outline of buildings, trees, hills, etc. seen against the sky
Congestion
the state of being overcrowded, especially with traffic or people.
Commute
travel some distance between one's home and place of work on a regular basis.
Diversity
a range of different things or the inclusion of different types of people, cultures, etc., in a group or organization.
Megalopolis
a very large, heavily populated city or urban complex.
Skyscraper
a very tall building with many stories