St Mary's of the Lake Hospital. This is just one wing of the older part of the hospital. History to follow.
The following is from Providence Continuing Care Web site.
St. Mary's of the Lake

Originally owned by Emanuel Ellerbeck, St. Mary’s of the Lake was passed from Richard Ellerbeck to Francis Archibald Harper and then to Daniel Rourk, who sold the property to Les Soeurs de la Congregation de Notre Dame de Montreal. Les Soeurs de la Congregation de Notre Dame de Montreal turned the property into a boarding school and renamed the site St. Mary’s of the Lake.

In 1904 the Sisters of Providence purchased St. Mary’s of the Lake from Les Soeurs de la Congregation de Notre Dame. In 1910, orphans from Providence Manor were moved to St. Mary’s of the Lake which remained an orphanage until the 1940s.