Grand Opera House

Historical marker location:

135 West 8th Street, Dubuque, Iowa

( Marker is on West 8th Street west of Iowa Street, on the right when traveling west.)

National Register of Historic Places.

architecture houses residential buildings

Iowa is known for its agricultural production, but did you know that it was once a major producer of coal? In the late 1800s and early 1900s, Iowa had more than 200 coal mines, and coal was the state's leading industry.