Guertler House

The Guertler House is a historic house located at 101 Blair St. in Alton, Illinois. Stonemason Ignaz Bruch built the house in 1854. Bruch, who immigrated to the United States from Germany in 1846, was a prominent Illinois stonemason who constructed buildings in cities ranging from Chicago to St. Louis, Missouri. The Guertler House is a Federal building with three bays. The front door and windows have a pointed arch design, while the second story of the house's west side has a single Gothic arch window.

The house was added to the National Register of Historic Places on July 30, 1974.