Leavenworth, Kansas - Its guest list reads like a who's-who of infamy, full of swindlers, gangsters, murderers and monsters. The gargantuan structure is at once a beautiful piece of architecture and an imposing sentinel on the land. In fact, from the outside, it looks almost like one of the many halls of government in Washington, D.C. But the people who stay here aren't guests of their own free will. They don't make laws. In fact, they broke a few. And inside, where penance is paid and cells are overcrowded, there are a few inmates who have stayed longer than most.