Where would Gitmo prisoners go?

Okay, so President Obama has chosen closing Gitmo as a top priority. Any logical leader would actually understand that before such a daunting task should come a plan as to where to put the prisoners. No Congressman except Jack Murtha (D-PA) has publicly voiced accepting them to his state of Pennsylvania (without approval from his constituents, I'm sure), and no U.S. ally has made gestures to keep them. What's going to happen to the detainees?