Didn't mean to take so long to get back to this, but technical problems got in the way. Here's some more of the photos of the Georgia Mental Health Institute grounds -- including some of the stuff that predates the old asylum.
Again, this article gives some handy background -- the property (along with a lot of nearby properties, and in fact much of Atlanta) once belonged to Asa Candler, who got very very rich selling Coke (the drink, thank you very much). This area was originally a farm, and Candler's son, Asa Junior, built the above mansion.
From a distance, the building looks well-kept up. It's only when you get close that you notice that it's boarded up and overgrown in many places.
This is some sort of anteroom, and the only part of the building easily entered -- it seemed to be off a garage of some sort.
Another view (and yeah, I know I showed this one before, but I love it:)
The Candlers had a ridiculous amount of features on the property -- a zoo, a golf course, swimming pools, gardens...
...and a greenhouse.
I seem to recall reading somewhere that the greenhouses were still in use until fairly recently, but I can't find any confirmation.
Not sure what these two photos show -- the gardens? The zoo? It looks like something out of "The Prisoner." There was a path leading down, but it was sort of overgrown -- if I'd been wearing jeans and boots instead of shorts and flip-flops, I would have taken a closer look.
As I said before, the grounds are pretty decently-maintained -- around crumbling, decrepit structures. It's all peaceful and strange at the same time.
Off to the side is this building -- probably a caretaker's office. Again, at first glance it looks as if it's in use. When you get closer, you see the broken windows, peeling paint, falling gutters.
I'll definitely have to go back up there at some point. It's pretty obvious that there's much, much more to see. The holy grail would be a trip down into the underground tunnels beneath (mentioned in the article), but I have a feeling that's a pipe dream.