The Shedd Aquarium is one of the best aquariums in the U.S which has a extensive collection of aquatic species and exhibits.

It is named as "the World's Aquarium" and covers an area of 4222,000 square foot with 22,000 different types of aquatic creatures, marine birds and lizards, otters, sea lions, sea stars, lionfish, penguins, whales, octopus and sharks etc to name a few.

It has different exhibits like Caribbean Reef, Wild Reefs, Fantasea, and Polar Play Zone etc to entertain and enthral the viewers with its aquatic shows.

http://www.sheddaquarium.org/explore_by_exhibit.html

http://en.wikipedia.org/wiki/Shedd_Aquarium

Some of the gas stations are listed below Delta sonic, speed way, Sam's club, Phillips 66, Shell, Thornton's, Costco, Petro express gas, BP, 7-Eleven, Fulton Deplanes Garage. In gas stations, they sell petrol, diesel and also other lubricants. Fuel is called as gasoline in U.S.A

http://www.superpages.com/yellowpages/C-Gas+Stations/S-IL/T-Chicago/

http://www.chicagogasprices.com/

The above website gives the gas station details with fuel price and also the area where it is located. The other details like price of fuel in the last 24 hours can be known from this link.