The Panorama of the City of New York was built for the 1964 World’s Fair.
Here’s a brief video, which begins to give a sense of scale and detail –
How is this map used as a resource?
from the article –
The event came about after artist Damon Rich and QMA realized the opportunity of using the museum and its resources as a space to bring together advocates committed to various housing fields. As illustrated by the hundreds of tiny fluorescent markers throughout the Panorama, New York City has been strongly affected by the subprime mortgage and foreclosure crisis. These advocates and their organizations have been imperative in the efforts to reverse this crisis and its impact on thousands of families around the city. For this reason, it seemed fitting to have a “Thank You” party to honor the important and difficult work they have been doing and will continue to do as the housing crisis continues. In conjunction with the Red Lines Housing Crisis Learning Center exhibit, the Panorama was outfitted with markers highlighting blocks with 3 or more foreclosures of 1-4 family homes filed in 2008.
Here’s a few more from the QMA Flickr page to give a further sense of scale and detail.