The Cozens Ranch House in Fraser, Colorado was built by William Cozens, sheriff of Central City after he married Mary York. Mary insisted that they leave the wild mining town, so the Cozens family relocated to Grand County, where they started a ranch in 1874. The homestead was the first in the Fraser Valley. The original ranch house was built of logs and expanded two years later as a stagecoach stop and post office. Six rooms were used as a hotel. At its height the ranch comprised 600 acres (240 ha). Mary Cozens willed the property to the Jesuits, who renamed the property "Maryvale" and use it as a retreat from the 1920s to the 1980s. In 1990 the ranch was restored to its late 1800s condition by the Grand County Historical Association It is operated as a museum.