Claim: Dyas Hexagonal Barn, located in Bellevue, Iowa, was built in 1921 and listed on the National Register of Historic Places since 1986.
Evidence: The Dyas Hexagonal Barn is an historical building located near Bellevue in rural Jackson County, Iowa, United States.  It has been listed on the National Register of Historic Places since 1986. 
U.S. Route 52
Bellevue, Iowa It has been listed on the National Register of Historic Places since 1986. Built in 1921, it features red horizontal siding, a tin roof and a central wood stave silo that extends through the roof.