The United Lung of America
The rivers of the U.S.A. might be very regular when you sit by them for a peaceful picnic, but when aggregated they make up something much more magnificent.
The way they scatter in patterns and formations across the country makes it look like a giant lung. Pumping water along its veins, arteries and capillaries, The United States of America moves forward.
Click the image below to see it in high definition:
You can download the vector file for the Map of American Rivers courtesy of Nelson Minar here. Below is the even more detailed rendering of the vector by mbostock: (click it to see the full version, it’s insane):