The best New York City, NY subway art depicting the diversity of the city is found at the 72nd Street station. The artwork at 72nd Street is "Perfect Strangers", a set of portrait mosaics by artist and photographer Vik Muniz.

Vik Muniz photographed more than three dozen “characters” who represent the unique and quirky kinds of people one encounters on the NYC subway. Muniz's photographs have been recreated in mosaic and installed throughout the mezzanine and entrance areas of the station. The art work represents colorful New Yorkers of all stripes. The art figures humanize the mezzanine concourse spaces and provide bursts of color and visual interest. The main station entrance features a laminated glass canopy at street level depicting a flock of birds, bringing art and nature to the busy street.

Vik Muniz is a Brazilian-born artist who lives in New York City and Rio de Janeiro. In his art, he uses unconventional materials and methods to create images culled from pop culture and art history. His work appears in international museum collections such as the Museum of Modern Art, the Metropolitan Museum of Art, the Guggenheim Museum, and the Whitney Museum of American Art.

More Info: en.wikipedia.org