Areas of Illinois away from Lake Michigan — e.g., places other than Chicago — have a high occurrence of tornadoes. You might want to check the Tornado safety page if you are visiting Illinois. In March of 2006, Springfield was hit with a tornado and the city was apparently affected in every area. East St. Louis is one of the worst crime cities in the country and has little touristic interest except for the casino riverboat. Chicago is mostly safe except for certain neighborhoods that are generally along the South and West sides.
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English is the dominant language in the state of Illinois. Spanish is widely spoken in the Chicago Metropolitan area by its large Hispanic population, though not well understood outside of Chicagoland. Polish and Chinese are the third and fourth most spoken languages within the state, but only within Chicago and its suburbs.