Waverly Hills Sanitorium, Jefferson County, Kentucky.

In 1910, a two-storey hospital was built to accomodate roughly 40-50 patients who were stricken with tuberculosis. This was to be known as Waverly Hills Sanitorium. However another outbreak of tuberculosis broke out and this prompted another hospital to be opened.
The hospital closed in 1962 due to a revolutionary drug (at the time) which lessened the need for patients with TB to be admitted to hospitals such as Waverly.
 In 1912, a children's pavilion was added to the site that could accomodate 50 more beds. This was not only for sick children but for those whose parents suffered with TB and had no one else to look after them properly. 

It has become a popular site for paranormal shows like Ghost Hunters and even Most Haunted have come to investigate it too. 

Here are some images of the sanitorium as it was and how it is now.

Before

After

Information was taken and reworded from Wikipedia, images are from
whsmemorial.tripod.com
 mentalfloss.com
 https://www.youtube.com/watch?v=JoF3zl8AdzY
 http://www.examiner.com/article/waverly-hills-sanatorium-2015-ghost-tours-kicked-off-despite-winter-weather