Alpenrose in pictures: The end of an era for a Portland institution Updated Feb 25, 2021; Posted Feb 25, 2021 Alpenrose Dairy has been much more than a dairy during its 100-plus year history. (Oregonian/OregonLive file photo)Oregonian Facebook Share This week’s announcement of the permanent closure of the Alpenrose Velodrome and events space is the latest chapter in the slow closure of a much-loved Portland institution. The Southwest Portland dairy, which was sold after a family rift in 2019 by the Cadonau family that founded it in 1916, has been a fixture in the community for more than 100 years. Since the sale, the dairy has continued to operate but the social aspect of the dairy has been sidelined, with different parts of the complex slowly being closed.