4. 29 Broadway

29 Broadway-Art Deco Mailbox-NYCImage via Art Deco Mailboxes

29 Broadway is a narrow building in the Canyon of Heroes with beautiful Art Deco elements on the exterior. The silver mailbox reflects the sleek lobby lined with silvery Cippolino marble walls and an aluminum leaf ceiling. An atypical mail box with a left hinge, this one is decorated with “symbols of progress, modes of travel, and movement of the mail,” write Greene and Lavelle.