Mercato Vecchio
Florence: Santa Maria Novella District
Note the location on the GPS in the lower right of the screen for the Glyph Location.
Hat-Trick
Hint: Like the other photographs, the piece of Eden can usually be found on the person in the picture. In this case, inside Houdini's coat.
Hint: "He almost beat them," is the hint here. Beat being the beating of one's heart. In this case, the piece of Eden can be found on Ghandi's chest.
Hint: Notice that there is "6=1" listed next to the picture of Lee Harvey Olswald? Line up that 6 on the dial and then fill in the approriate numbers to get the correct result, solving this puzzle.