Midtown Is Still Empty, and Landlords Are Sounding the Alarm

The 61st-floor terrace of the Chrysler Building, the Jazz Age wonder of the New York skyline, is studded with massive steel eagles. On a misty October night, Aby Rosen, the German-born investor who’s redeveloping the building, leans against a railing beside one of the birds. It’s beginning to drizzle, but Rosen, who has long white hair and alert blue eyes, is in an ebullient mood.