$1 million three different ways ($1, $20, and $100 bills) at Chicago Fed Money Museum.

Tilted metal-framed cube packed with bundled US dollar bills on display at the Chicago Fed Money MuseumOne million dollars in banded stacks of $20 bills arranged in a circular display under a glass dome at the Chicago Fed Money Museum.Uncut sheet of $100 bills displayed under glass in an open aluminum briefcase at the Chicago Fed Money Museum