3. 70 Pine is Supposed to Resemble a Mountain

The glass observatory on the top floor, as well as the glass-covered mechanical section above it, are supposed to be the snowcap to the limestone skyscraper’s mountain (don’t ask about the aluminum spire on the snowcap). But despite this distinctive design, resulting in one of the most recognizable buildings downtown, it didn’t actually become a New York City landmark (interior and exterior) until 2011.