Built in 1883. Listed on the National Register of Historic Places in 1986.
From the record
“The Roberts Octagon Barn built in 1883 is an historic octagonal barn located on CR W62 near Sharon Center, Johnson County, Iowa. On June 30, 1986, it was added to the National Register of Historic Places.”
Wikipedia article Roberts Octagon Barn, CC BY-SA 4.0.
One of 96 National Register listings published here for Johnson County · listed in 1986 · category: Building · built in 1883.
Also known as. Iowa Round Barns: The Sixty Year Experiment TR
Township. Sharon township
When was it built? 1883
National Register reference number.86001449- the number the National Park Service assigned this property when it was listed, and the key its nomination file is catalogued under at the National Archives.
Fires near this property
6 since 2006
Regional context, not property-specific
evidence. The
federal wildfire occurrence database
lists 6 fires within 5 miles of Roberts Octagon Barn
between 2006 and 2015, burning about 18 acres in total. None started naturally. None was recorded as arson.
Distance is straight-line from the map coordinates, so a fire counted
here may appear on a neighbouring settlement's page as well.
Reported cause
Fires
Missing data/not specified/undetermined
2
Debris and open burning
2
Smoking
1
Equipment and vehicle use
1
The most recent of
them, most recent first, with the day each was reported and the service
that recorded it.
Regional context, not property-specific
evidence. The National Weather Service names
Sharon Center, the town this property stands in, in 8 storm reports between 2006 and 2026: 5 thunderstorm wind, 2 tornado, 1 hail.
No death or injury is recorded in these reports. Each account below is quoted exactly as the forecast office
filed it, from the NOAA Storm Events Database, and each date
opens the federal record of that event.
Wind gusts estimated to be 70 mph damaged a grain elevator, partially ripped off a garage roof, snapped some large tree limbs, and flattened some corn about 4 miles northeast of Frytown, IA which is also known as Williamstown, IA around 700 am CDT July 24.
Wind gusts estimated to be 70 mph caused widespread wind damage from Sharon Center, IA to Lone Tree, IA between 500 am and 515 am July 21. Numerous trees and utility poles were blown down. Also a sign and awning were damaged at a gas station near Hills, IA.
No historic map-sheet match is published
for this property yet. That does not mean no map exists. This record needs
a coordinate-quality review before it can be joined to a sheet boundary.
Browse the county's mapped places while that work is
pending.
Listed places nearby
6 within 8 miles
Other National Register properties close
enough to walk or drive between, ordered by distance from this one. Both
positions come from the same geocoding pass that matched these properties
to their map sheets.
Listing record. National Park Service National Register of Historic Places, listed-properties dataset, current to 2026-05-22.
Map join. Address geocoded through the United States Census geocoder, then tested against the published boundary of every sheet in the USGS Historical Topographic Map Collection.
How this page is made. Listing fields come from federal records; map-sheet coverage is a labelled coordinate-to-boundary calculation, not a source-field claim.
Wildfire. Short, Karen C. 2022. Spatial wildfire occurrence data for the United States, 1992-2020 [FPA_FOD_20221014]. 6th Edition. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2013-0009.6 Collected with United States Government funding and usable without additional permissions or fees.
Storms. NOAA National Centers for Environmental Information, Storm Events Database https://www.ncei.noaa.gov/stormevents/ A work of the United States government, no copyright under 17 U.S.C. 105. Narratives are quoted verbatim from the National Weather Service report and are not edited or summarised.
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