Chicagohenge
The phenomenon of “Chicagohenge” corresponds with the spring and autumn equinoxes. Because Chicago was built on a grid system, with streets arranged at right angles, they line up north to south and east to west.

The phenomenon of “Chicagohenge” corresponds with the spring and autumn equinoxes. Because Chicago was built on a grid system, with streets arranged at right angles, they line up north to south and east to west.