Earlier this week, the NY Times had a feature on the Queens Museum of Art's Red Lines Housing Learning exhibit. Artist Damon Rich put markers on the Panorama of New York City (the 9,335 square foot architectural model of the city which has over 895,000 structures) to show where there have been foreclosures. From the Times:

Each plastic triangle represents a block where there have been three or more home foreclosures. Visitors on the balcony walkway that surrounds the Panorama, at the Queens Museum of Art in Flushing Meadows-Corona Park, can see in a single glance precisely where subprime lenders wreaked the most havoc.

Hundreds of these pink stigmata cover Bedford-Stuyvesant, Crown Heights, East New York and Canarsie in Brooklyn like an invading army. In Queens most markers are camped out in Ozone Park and Cambria Heights, as well as in parts of Jamaica and Corona. As for Manhattan, there are precisely two.

All told, the Times reports there are "582 [markers] in Brooklyn; 551 in Queens; 140 in Staten Island; and 151 in the Bronx, mostly in the Wakefield section." And these numbers were derived from figures from the Neighborhood Economic Development Advocacy Project and calculations by the Regional Plan Association.

As for putting the markers on the Panorama, volunteers wore slippers and were armed with maps as they ventured on the map to place the markers (atop foam squares) in neighborhoods. For another view of the foreclosure crisis, here's the Times interactive map that allows you to see foreclosures at the street level. And if you have (a lot of) change to spare, you can adopt buildings on the Panorama.