Tour Montparnasse is a skyscraper in Paris located at 33 Avenue du Maine. Ever since it was built, film-buffs have noticed its resemblance to the monolith in Stanley Kubrick’s 2001: A Space Odyssey. Although not of the exact same dimensions as the monolith it is interesting to note that construction commenced one year after the film and the novel of the same name written by Arthur C Clarke, who wrote the book concurrently, was released.
It is slightly offset from the Champ du Mars leyline and dominates the skyline.
For more in depth analysis of the Saturn-Mars-Paris connection see links below.