Keywords: Willis Allen House.jpg 82002606 37 43 41 5 N 88 55 39 W Front and northern side of the w Willis Allen House located at 514 S Market Street in Marion Illinois Marion Illinois United States Built in 1854 it is listed on the National Register of Historic Places Own 2013-11-02 User Nyttend Nyttend No<nowiki></nowiki>ne Built in Illinois in 1854 Houses built in the United States in 1854 1850s houses in Illinois Brick houses in Illinois Fire hydrants in Illinois Italianate architecture in Illinois Leaves in autumn Marion Illinois National Register of Historic Places in Williamson County Illinois Red fire hydrants in the United States Building-centered pictures by User Nyttend |