10 things you may not know about Illinois

The round Silo for farm storage of silage was first constructed 
on a farm in Spring Grove, Illinois (McHenry County).
Illinois was the first state to ratify the 13th Amendment to the 
U.S. Constitution abolishing slavery (1865).
Illinois boasts the highest number of personalized license 
plates, more than any other state.
Chicago's Mercy Hospital was the first chartered hospital 
opened in Illinois (1852).

The highest point in Illinois is Charles Mound in 
Jo Daviess County at 1235 feet above sea level.

The Harold Washington Library in Chicago is the world's 
largest public library building, at approximately 
756,640 square feet. 
The first animal purchased for the Lincoln Park Zoo was a 
bear cub, bought for $10 on June 1st, 1874.

The world’s first McDonald’s opened for business on 
April 15, 1955 in Des Plaines, Illinois. 

Roller skates, spray paint and pinball games were all 
invented in Chicago. 
Kaskaskia is the only community in Illinois WEST of the
Mississippi River, has an Illinois telephone area code (618) and
a Missouri ZIP Code (63673).