Thomas Johnson Polygonal Barn
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The Thomas Johnson Polygonal Barn was a historic building located near Wellman in rural
Washington County, Iowa Washington County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 22,565. The county seat is Washington. Washington County is included in the Iowa City metropolitan area. History Washington County was ...
, United States. The 16-sided building measured in diameter. The structure was covered in red vertical siding and it was topped by a sectional
conical In geometry, a cone is a three-dimensional figure that tapers smoothly from a flat base (typically a circle) to a point not contained in the base, called the ''apex'' or '' vertex''. A cone is formed by a set of line segments, half-lines, ...
roof, with windows on the south side and an aerator. The numerous windows and the 15 hog pens that were around its perimeter suggests that this was built as a hog barn as light and ventilation in hog barns were a concern in the early 20th-century. with It was listed on the
National Register of Historic Places The National Register of Historic Places (NRHP) is the Federal government of the United States, United States federal government's official United States National Register of Historic Places listings, list of sites, buildings, structures, Hist ...
in 1986. The barn has subsequently been torn down, and it was removed from the National Register in 2014.


References

Buildings and structures in Washington County, Iowa Barns on the National Register of Historic Places in Iowa Polygonal barns in the United States National Register of Historic Places in Washington County, Iowa Former National Register of Historic Places in Iowa {{Iowa-struct-stub