Neat pic!
In the late winter when no hunting seasons were open, we used to find these old barns out in the Palouse Prairie along the WA/ID line. They were long abandoned because there was no need of farm animals once the harvests were fully mechanized (or people!). Some, like this one you show, were works of art.
Our real motive for sniffing these out (using old AAF photo montages from the 30s to the '50s) was that they were full of feral rock doves (what anybody but a bird nerd would call "pigeons"). Toss a rock on the roof and start blasting-- free "blue rocks"! We ate some of them, but mainly left them for the coyotes. I suspect that most of these have been burned down or demolished now in the trend toward "clean farming."