| Thomsen Round Barn | |
| Coordinates: | 43.3461°N -94.4978°W |
| Area: | less than one acre |
| Built: | 1912 |
| Added: | June 30, 1986 |
| Refnum: | 86001426 |
The Thomsen Round Barn was an historical building located near Armstrong in rural Emmet County, Iowa, United States. It was built in 1912 as a dairy barn.[1] The building is a true round barn that measures 65feet in diameter.[2] The first floor is constructed of concrete and the second floor consists of white vertical siding. It features a two-pitch conical roof, and a 16feet central silo.[2] The barn was listed on the National Register of Historic Places since 1986. As of July 21, 2014 it is no longer standing.[2]