Along with amusements, the Pike advertised scientific attractions. One such attraction was the Baby Incubator building. Here spectators saw babies being cared for as an example of progress in childcare.
The premature babies came to the Fair from St. Louis area hospitals. Each baby was placed in an incubator and had a personal nurse. The incubator was a square metal-framed, glass-sided box. It maintained a temperature of ninety degrees with fresh air being constantly supplied.
This attraction may have been considered scientific, but it was not free. Visitors to the Baby Incubator building paid 25 cents to enter it.