7. The Flatiron Building

Flatiron Buidling-Art Deco Mailbox-2Image via Art Deco Mailboxes

The Flatiron Building mailbox contains the Neoclassical elements that defined the architectural style of Daniel Burnham during this time period, after serving as Director of Works for the World’s Columbian Exposition in Chicago, the famous White City. As such, the pediment top and ornamentation seem befitting of a government building.