I have collected 70 visualizations of New York City, that mostly build on open data. The qualification for a visualization to make it on this list was to be interactive in one way or another. Some of them are not very advanced, using Carto's standard mapping technology, and others are not available online but were constructed as art exhibitions. The latter ones are included because of their extensive documentation in the links below.

Nature/Ecology/Energy

NYC Street Trees by Species (Jill Hubley, 2015)

Click the image above to get to the project's website. Read more about the project here.

NYC Street Trees (Cloudred, 2014)

Click the image above to get to the project's website. Read more about the project here.

Visualizing Social-Ecological-Technical Systems (Urban Systems Lab)

Read more about the project here.

Urbint Interactive Map for Energy Consumption and Greenhouse Gas Emission of NYC

Read more about the project here.

We Can (2018)

A multimedia storytelling project of people who pick up cans and bottles on NYC streets. Read more about the project here.

Superstorm Sandy (Spatial Information Design Lab?)

Read more about the project here.

Hurricane Flood Risk in NYC

Advancing Waters

Read more about the project here and here.

Culture/language/eating/drinking

An Interactive Visualization of Every Line in Hamilton (Shirley Wu, 2017)

Read more about the project here.

NYC Restaurants

Read more about the project here.

Conflict Urbanism: Language Ecologies (2018)

Livehoods

Museum of the Phantom City

A Peek Into Netflix Queues (NY Times, 2010)

The "Oldest" Place to get a Drink in Each and Every Neighborhood (iquantny)

The 25 Best Food Trucks in NYC (iquantny, 2014)

Pinpointing New York City in Songs

Justice/law/legal

The Location of Justice (Urban Omnibus in collaboration with Laura Kurgan, Juan Saldarriaga, and Jochen Hartmann for the Center for Spatial Research at Columbia University, 2017)

Read more about the project here.

Urban structure/construction

Welikia: Welcome to New York City, 1609

Read more about the project in "What Every Block of New York City Looked Like 400 Years Ago" at Gizmodo.

City Flows

Reshaping New York: How the City Changed in 12 years of Bloomberg (NY Times, 2013)

On Broadway

Manhattan Population Explorer

Read more about the project here.

Airbnb in New York City

NYC 311 Calls

Read more about the project here.

NYC Construction Map

Read more about the project here.

Active Major construction in NYC (New York City)

Pay Phones and Free Wifi (iquantny, 2014)

Health

Ending the AIDS epidemic - visualizing people living with HIV in NYC (2016)

The Haven Project (Juan Francisco Saldarriaga)

Read more about the project here and here.

Measles Vaccination Rate (iquantny)

Mapping the Bacteria in New York’s Subways

Fecal Map NYC: The Worst Places to Swim in the City (iquantny)

Payment for Massage (iquantny, 2014)

Transportation/transit

NYC Taxis: A Day in the Life

Read more about the project here.

HubCab (2011)

Most Blocked Driveways (iquantny, 2014)

A Year of Parking Tickets (NY Times, 2008)

Erroneously Issued Parking Tickets (The Guardian, 2016)

Read more about the project here.

Diplomats Owing Money to NYC in Outstanding Parking Tickets (iquantny)

Other States Owing Money to NYC in Outstanding Parking Tickets (iquantny)

NYC Transit Frequency Visualization - (not sure that it works)

Read more about the project here.

Commute Disruptions in NYC

New York City Motor Vehicle Collision Data Visualization (2018)

Read more about the project here.

The Lost Subways of New York (WNYC)

MTA Ridership (Sha Hwang, 2006)

NY Crosswalk: Most Dangerous Intersections in Manhattan

Read more about the project here.

Bad Intersections

Transit Battle NYC

Cycling Collision Map (iquantny)

Safest Citi Bike Stations (iquantny)

Education/sports

Math Scores by Race and Income, New York City Public School Students in Grades 3-5 (Nicole Mader & Ana Carla Sant'anna Costa, 2016)

Nike+ City Runs

Unfortunately does not seem to be available online but only as in-store interactive visualizations. You can read more about the project by clicking on the image above.

Keeping Track Online

Keeping Track lets you identify the needs and advocate for New York City's 1.8 million children.

Map Your Moves

Inequality/economy/demographic information

Equal Population Mapper (Slate, 2014)

What If You Could See Inequality (MyDeals) -- does not work

Read more about the project in Wired's article "Topographic Income Inequality Maps."

Inequality and New York's Subway (The New Yorker)

Mapping Segregation (NY Times, 2015)

Mapping America: Every City, Every Block (NY Times, 2010)

Visualization of distribution of racial and ethnic groups across the United States of America.

New York Fed’s Visualization Page

Contains numerous visualizations of city data, such as City School Spending Per Student, etc.

Mapping New York City’s Affordability Gap (Curbed 2017)

The Racial Dot Map (University of Virginia, 2013)

Visualization of geographic distribution, population density, and racial diversity of the American people in every neighborhood in the entire country. Read more about the project here.

NYC Singles (2015)

The Marathon Route’s Evolving Neighborhoods (NY Times, 2011)

Percent Change in Rent Stabilization (iquantny)

Top 250 Grossing Fire Hydrants in NYC (iquantny, 2014)

Crime

Murder Rate Comparisons to Other Cities (iquantny)

Actual v. Closest Police Precinct Boundaries (iquantny)

NYC Crime Rank (iquantny)