Springfield is the capitol of Illinois, as of 2014. The Illinois state government has been functioning in Springfield since 1839, and several buildings have served as its capitol since then. The sixth and current building is at the corner of Capitol Avenue and Second Street.
Kaskaskia was the first capitol of Illinois when Illinois became the 21st state of the Union in 1818. The state government moved to a building in Vandalia in 1820, then to another building there in 1824 after a fire destroyed the first. In 1837, state lawmakers voted on a new capitol location, and a young lawyer named Abraham Lincoln suggested Springfield. In 1839, the state government moved all of its functions to Springfield.