New York City has closed off five blocks of Times Square to vehicles. You can check it out for yourself on this webcam:
It may be a little hard to make out, but there are lawn chairs in the upper left corner, in what were once four lanes of traffic.
The Times architecture critic weighs in with a first impression here.
On the other coast, San Francisco is following New York’s lead in reclaiming asphalt for people, as described on Cooltown Studios site. (Thanks to Scot Bathgate.)