Old State Capitol State Historic Site

Old Illinois State Capitol
LocationSpringfield, Illinois
Coordinates39°48′04″N 89°38′55″W / 39.80111°N 89.64861°W / 39.80111; -89.64861
Built1837
ArchitectJohn Francis Rague
Architectural styleGreek Revival
NRHP reference No.66000331
Significant dates
Added to NRHPOctober 15, 1966
Designated NHLJuly 4, 1961

The Old State Capitol State Historic Site is a former capitol building for the U.S. state of Illinois. Located in Springfield, it is one of two preserved former Illinois capitol buildings (the other being in Vandalia). It was built in the Greek Revival style in 1837–1840, when Springfield became the capital city, and served as the state house from 1840 to 1876, when it was replaced by the current capitol. It is the site of candidacy announcements by Abraham Lincoln in 1858 and Barack Obama in 2007. It was designated a National Historic Landmark in 1961, primarily for its association with Lincoln and his political rival Stephen Douglas.