I have friends in high places. Take a look at this detail at the top of the Post Tower at 75 West Street, where one of them lives:

The wonderful thing about being on this roof is that shifting your gaze slightly yields this:

I shifted my gaze in the other direction and saw a big open space where the World Trade Center used to be, just across the street.

It's a good idea to shake up your perspective from time to time, even if what you see leaves you shaken.

And then it's a good idea to ground yourself again: