George H. Gallup House - Credit: Wikimedia Commons
The George H. Gallup House is an historic octagonal house built in 1901 that is located at 703 South Chestnut Street in Jefferson, Iowa, United States. It was the birthplace and boyhood home of Dr. George Horace Gallup, the pioneer of public opinion polling. On July 18, 1985, it was listed on the National Register of Historic Places. Read more on Wikipedia
Source: en.wikipedia.org