Sheep Ranch Fortified House

The Sheep Ranch Fortified House, near Arock, Oregon, is a historic structure that was built in approximately 1863. Also known as the McWilliams House, it was built by a man with the McWilliams family name. It served as a ranch house, a stagecoach stop, and a fort.

It was listed on the National Register of Historic Places in 1974.

It was bought in 1914 by Pascual Eiguren, a Basque immigrant, whose family continued to own it in 1974, and it is partly notable for its Basque association.