The New York Times has a fascinating interactive this weekend showing how the city of New York has transformed in ten years during the Michael Bloomberg administration as mayor.
Since Bloomberg took office, New York City has added 40,000 new buildings.
Below is a comparison of the NYC downtown skyline from 2002 and 2013:
In addition to a major initiative to rezone the city, Bloomberg helped establish more than 450 miles of bike lanes around the city.
I highly encourage you to check out the entire interactive.