I definitely enjoyed and would recommend a trip to the Shedd Aquarium. This are some pictures of the Jelly fishes.
The Shedd Aquarium is an indoor public Aquarium that opened on May 30, 1930. The aquarium contains over 25,000 fish, and was for some time the largest indoor aquarium in the world, with 5,000,000 US Gallons of water..
http://en.wikipedia.org/wiki/Shedd_Aquarium
