Over time the sanitarium was expanded to 248 guest rooms and much more. It had a working farm and it's own coal powerhouse which still stands. The nuns sold the property in 1976 to The Way International, which many people consider a cult. You can do your own search on that and read the stories about The Way.
So now Sylvan Springs sits idle but not forgotten. Indiana Landmarks is trying to sell the property. Word amongst the locals in the area is that there is some interest but it's going to take a lot of money to buy and restore. But what an opportunity for the right buyer. Hotel, Bed and breakfast, college, private school?