Tiger refuge locations, possibly by ATL

I have always been interested in tigers. I would like to know where there are be tiger refuges where I can volunteer so that I can work with them. I am living in Atlanta, GA, currently so any in that area would be awesome. Also, I would be willing to move to other locations, if it was the right move. I deeply care for these animals and would love to be able to help them. PLEASE, help me find the best places and local places that I could do this. I am currently considering CA or CO for a move anyway, but other options are possible. Thank you so much for help.