Sometimes it’s kind of tough to bring an image to life through an audio podcast, but we thought it was important enough that you needed to see it somehow.

It’s oftentimes hard for us to understand just how wild the Thirteen Colonies were back in the day. In 1775, New York City was roughly a square mile of the southern tip of Manhattan. Where today’s Wall Street is was literally a wall, keeping out anything to the north. That’s another 13 miles of island (roughly) to the north which might have some Europeans living there, but not many. So, to that end…

This is a map of modern-day Boston, with a neighborhood breakdown on it, per the city’s Office of Neighborhood Services:

And this is the full map from the cover artwork. They’re slightly rotated to one another (more likely, the 1775 map is pointed toward magnetic north than true north), but the heart of Boston, at center left, is essentially the tip of today’s South Boston. On the map above, the siege line is about where the word “South” is printed.

So it was pretty easy to set up a line of defense to keep the city isolated, especially since the city was surrounded by water on three sides. Supplies and people could get in and out by water, but the city itself was still cut off for anyone approaching by land.

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