215 E. Prospect Ave

Historical marker location:
215 E Prospect Ave, Ottawa, Illinois
( Marker is on East Prospect Avenue east of Catherine Street, on the right when traveling east.)

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The Illinois State Capitol building, located in Springfield, is home to the world's largest collection of stained glass windows by Louis Comfort Tiffany. The windows were installed in the Capitol between 1885 and 1917 and depict scenes from Illinois history.