New York City's Latest Infill Strategy

"Through much of the region's building boom of the past few years, the sites of the city's post-war residential developments, with their trademark brick and concrete towers adjacent to spacious courtyards and plazas, have been relatively devoid of major changes.

That could soon change: New plans by a Manhattan developer and a recent city initiative suggest that the generous open spaces below, around, and between the hundreds of such towers may become the next frontier for development in a city where a large swath of buildable land is an endangered species."