http://en.wikipedia.org/wiki/Hilton_Hanoi_Opera_Hotel
Since 1999 there’s been an actual Hanoi Hilton. Surprising facts about the original: (1) no North Vietnamese was ever charged or tried for war crimes (and the North Vietnamese claim such charges have no standing because they never signed the Geneva Convention); and (2) To this day the Vietnamese claim that no prisoner was tortured in Hoa Lo Prison.