I'm Sarah Churchwell.

And I'm David Olushoge.

And in Journey Through Time, we're going to be bringing you stories from all over the world and across the centuries,

stories that reveal what it was like to live through key events in the past.

Okay, are you ready? Let's start.

This is damage caused by a forgotten explosion to the most famous symbol of America and yet forgotten.

It's only because of the efforts of activists in insisting that American popular memory come to terms with this,

that we've admitted that it happened at all.

He is trying to subvert what's going on, distract attention away from the fact that he's a spy

and a saboteur and saying this is actually about German honor.

There is really quite large network of spies, informers, bomb makers, saboteurs, all funded directly from Berlin.

The world had moved on by the time all of the evidence had been pieced together,

and it was kind of left behind in the shadow of history.

Bombs soared into the air and burst a thousand feet above the harbor.

Shrapnel peppered brick walls, and only a man fresh from the

trenches would have felt at home.