Since One World Trade Center eclipsed the Empire State Building as New York's tallest building this week on its way to becoming North America's tallest building, I thought I'd share a collection I call Tallest Skyscraper.
It contains all the currently modeled record holders for this title. Seen above is the Singer Building, which stood in New York from 1908 to 1968. Get a geo version of the model here.
Download the model from that page and open it in Google Earth; once there, you can right-click on the One Liberty Plaza building and choose "Hide Building" to view the Singer Building in its original context.