Hi. I live in a small apartment in New York City.  It's very hot today!
Oh wow. That's expected judging by the fact that it is the most populous city in the United States.
And all the concrete and asphalt doesn't help either.  Yes it is the most densely populated city in the US for sure.
The figures are unbelievable, as at 2016 there were estimated 2016 population of 8,537,673 residents there
And the diversity is unmatched also. It has the largest foreign  born population of any city in the entire world. 
One thing I can tell you for sure is that It  has a mix of  cultural, financial, and media and tops other cities , it's influence on  commerce, entertainment, research, technology, education, politics, and sports is high 
There was almost 63 million tourists visiting the city in 2017.  So much to see and do, and eat. 
Wow!, one thing i know for sure is that there are no dull moment as everything is fast paced
It's also the most photographed city.  A lot of modern architecture is juxtaposed with a lot of old classical architecture in the  City also.
Great!, oh well, New York City consists of five boroughs, each of which is a separate county of New York State.