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Senator BeltO’FALLON – The Tiedemann House in O’Fallon is one of 12 Illinois sites added to the National Register of Historic Places in 2020, State Senator Christopher Belt (D-Centreville) announced Wednesday.

“I’m pleased to hear the Tiedemann House has been recognized on a national scale for its architectural and historical value,” Belt said. “This beautiful home is a critical piece of the history of Illinois and the Metro East, and it’s an honor to finally see it added to the National Register of Historic Places.”



The Tiedemann House, constructed in 1884 by St. Louis architect Henry Peipers, was selected for its representation of Italianate and Queen Anne architecture, seen in details like decorative wooden arches, gabled dormer windows, jigsaw-cut balusters and etched glass throughout the home.

Ernest Tiedemann, the original homeowner, was a German immigrant who moved to O’Fallon in 1865. He opened the town's largest general store and served three terms as president of the town's Board of Trustees.

The National Register of Historic Places is the official list of properties that merit special attention and preservation. Every county in Illinois has at least one property or historic district listed in the National Register, and together they represent a cross section of the state’s history from its early settlement to the mid-20th century.

For more information on the National Register of Historic Places in Illinois, click here.