Klickitat County, Washington: History
Klickitat County was created out of Walla Walla County on December 20, 1859. Samuel Hill was an early promoter of the area, promoting better roads and building local landmarks such as a war-memorial replica of Stonehenge (Maryhill Stonehenge) and a mansion that would become the Maryhill Museum of Art. The Sam Hill Memorial Bridge across the Columbia River is named after him.