In his small New England hometown, Mark Vanhoenacker spent his childhood dreaming of elsewhere— of the distant, real cities he found on the illuminated globe in his bedroom, and of one perfect metropolis that existed only in his imagination. These cities were the sources of endless comfort and escape, and of a lasting fascination. Streets unspooled, towers shone, and anonymous crowds bustled in the places where Mark hoped he could someday be anyone—perhaps even himself. Now, as a commercial airline pilot, Mark has spent nearly two decades crossing the skies of our planet and touching down in dozens of the storied cities he imagined as a child. He experiences these destinations during brief stays that he repeats month after month and year after year, giving him an unconventional and uniquely vivid perspective on the places that form our urban world.