Cities are all-consuming. There are so many levels of life in one place. People are hustling to make it another day, but there are small pockets of peace in a metro ride.

Modern cities are all about efficiency, but the older ones are about adaptability and change. Certainly, the New York subway system and the London tube are exemplary.

A person’s view of the world is singular. Thus, a major city brims with a million perspectives, each different from the next. It’s mind-boggling.