Chicago Fed Money Museum

This guide to the Chicago Fed Money Museum starts with the million-dollar cube of one-dollar bills in the lobby, and a 2025 visitor who decided to verify that label by counting every strapped bundle in a photograph himself. It also traces a widely repeated online account of how a contractor's miscalculation may explain the display's odd dimensions. Look up from the cube toward the vault that opened in 1922, once among the largest ever built.