Even though MetroNorth runs trains past 2am, by 12:30am Monday night, I found Grand Central almost completely deserted. In thousands of visits, I’ve never seen it like this. Eerily beautiful. I could actually hear the echo of my footsteps. This month, PBS’s American Experience devotes an hour to the history of Grand Central Terminal, calling it “the greatest station of any type in the world.” It’s certainly my favorite public space in NYC. The PBS documentary runs several times this month.