The exhibit features Faust the Komodo dragon and dozens of other reptiles including a snakelike glass lizard to tiny geckos.
The aquarium drew two-point-one (M) million people last year.
The Shedd Aquarium's president Ted Beattie says the exhibit featuring Faust has been one of the most popular with visitors.
In other Komodo Dragon news, viewers of Children's BBC Newsround have named two of the baby Komodo Dragons at Chester Zoo which were born through parthenogenesis.
A second baby Komodo dragon has been named by Newsround Online users - and you chose to call it Indie.
Thousands of people took part in the online vote to pick names for the rare baby, which was born at Chester Zoo.
The first dragon was called Irwin, which was suggested by six kids. The winner picked at random was 11-year-old Matthew from Nottinghamshire.