This ad for the The Sky Ride attraction at the Chicago World’s Fair ran right after it was built in 1933. Created by the engineering firm Robinson & Steinman, the structure was used as a transporter bridge that ferried people across a lagoon at the center of the fair. Since this was the signature attraction at the fair, it needed to look particularly grand in the ad. The use of color, insinuation of speed with lines behind the sky cars, and comparison in size of the people at the bottom with the Sky Ride itself, all make it seem that much larger of a spectacle.

FUN FACT: Using 120 pounds of dynamite and 1,500 pounds of thermite charges, The Sky Ride was demolished at the end of the fair after having carried 4.5 million riders. (Source: Wikipedia)