Willis Allen House
514 S. Market St., Marion, IL 62959
Historic Sites
Civil War hero John A. Logan studied law at this home under Senator Willis Allen. Come visit the oldest house in Williamson County!
The Willis Allen House is a historic house located at 514 S. Market St. in Marion, Illinois. Built in 1854, the house is the oldest remaining in Marion. The house was built for U.S. Representative Willis Allen, the first member of the House from Williamson County. Allen, who settled in Marion in 1830, served in the House from 1851 to 1855; he was also a lawyer, judge, local politician, and Illinois Senator. The house is a two-story Italianate residence built from brick and sandstone. The hip roof of the house features a cornice with cavetto moldings and Tudor arched brackets.The house was added to the National Register of Historic Places on February 11, 1982.
What's happening nearby...

Highbanks Hustle
Southern Illinois Raceway • Jun 19 – Jun 21 @ 4PM
One of the most sought after races of the year with huge payout and great family friendly atmosphere!
Read more about Highbanks HustleSouthern Illinois Showdown Demo Derby
Williamson County Fairgrounds • Jun 19 – Jun 21 @ 5PM
Experience the 2025 Southern Illinois Showdown Demolition Derby from June 19-21 at the Williamson County Fairgrounds in Marion, IL. Enjoy thrilling derby action across multiple classes,…
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Thrillville Thrillbillies at Mtn Dew Park
Mtn Dew Park • May 27 – Jul 31 @ 7:45PM
Come out to the 2025 season of the Thrillville Thrillbillies! Mtn Dew Park is one of the most exciting stadiums in Illinois, and we want you…
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The Goddard Chapel
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Marion Carnegie Library
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One of the few remaining Carnegie buildings is seated at the center of Williamson County. Originally built in 1916 and renovated in 1997, the library has…
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