Height comparison of 6 remarkable points in Paris:

Eiffel Tower
Tour Montparnasse
Grande Arche
Sacré-Cœur (and Montmartre)
Notre Dame
Arc de TriompheThe heights were taken from Wikipedia articles, and varied from heights found in other sources. The images were drawn by me, loosely based on images found on commons (all either CC or GFDL).

Image based on an idea found in "Parijs Inside Out" by Compass Map Group, Winford, UK (http://www.mapgroup.net/).
Own work
IIVQ