San Lorenzo
Florence: Santa Maria Novella District
Note the location on the GPS in the lower right of the screen for the Glyph Location.
Martyrs
Hint: Photo hunt! Move the cursor around on the painting until you hear the chime going off, indicating the location of a Piece of Eden in the painting.
After finding the pieces in the paintings, guide the flame on the world map over Joan, switching the painting to the one of her being set on fire. Then select the photograph of Rasputin and move it on top of the photo of Czar Nicholas II. All done!