The Hall of Science at the 1933/34 Chicago World’s Fair is a very recognizable exhibit when looking through photos or postcards.
“The Hall of Science, 700 by 400 feet, two stories and a mezzanine in height, rising from colored, concrete terraces. At night it is brilliantly illuminated by indirect and fluctuating colored flood lights. Located at Sixteenth St. and the Lake, with part of the building extending directly across the Leif Eriksen Drive- Chicago’s famous water-front boulevard.” It was designed by Paul Cret of Philadelphia.
Featured at the exhibit were 7 topics- mathematics, astronomy, physics, chemistry, biology, geology, and medicine. The ground floor was devoted to medicine and industrial applications of science. On the main floor, all the other sciences were represented, but astronomy not so much due to the then newly built Adler Planetarium.
The above photo is a booklet from my collection that was handed out at the Hall of Science. Inside there were dioramas, a library, lecture hall, and murals. One of the exhibits showed inheritance in guinea pigs! There was a toothbrush exhibit on how to brush your teeth properly. Anything wacky and wonderful was shown in the Hall of Science.