Ralphsnyder Decagonal Barn

Ralphsnyder Decagonal Barn is a historic decagonal shaped barn located near Masontown, Preston County, West Virginia. The 10-sided barn was built in 1890, and is a frame building with an unusual steeple-shaped cupola. The barn was moved to its present site in 1981, which necessitated a number of replacements of portions of the original structure and roof. It is the only 10-sided barn known to have been constructed in West Virginia.

It was listed on the National Register of Historic Places in 1985.