If you think you know where the above photochroms were taken, please click through and leave comments and notes on the images with the information! Check out some of the sleuthing in progress:
pinkiesblues says, “I believe this is the Opera in Paris built by Napoleon III. “
epicharmus says, “This [photo on left] is another view of the Old Port (“Vieux-Port”) of Marseille in France, similar to the shot here [photo on right]. The Église Notre-Dame-des-Accoules is visible to the left. “
Photos from the Libary of Congress.