In the 1966 movie Fantastic Voyage, a submarine crew is reduced to microscopic size and injected into the blood stream of an injured diplomat. The goal: to save his life.
Moviegoers were promised a stunning experience that would take them where no human or camera had ever been.
That was, of course, science fiction.
But, on Wednesday, you could take a different kind of voyage: a trip through a giant inflatable replica of a human colon -- 20 feet long, 12 feet high.