The Centennial Mills, originally known as the Crown Mills, is a complex of twelve buildings along the Willamette River in Portland, Oregon's Pearl District,[1] in the United States. The Portland Development Commission, later renamed Prosper Portland, acquired Centennial Mills in 2000. The buildings were slated for demolition, except for the flour and feed mill buildings.[2] Between summer 2015 and fall 2016, most of the buildings on the property were demolished.[3][4] In 2024, Prosper Portland sold the property to private investors.[5]