Rome has St. Peter's, London has St. Paul's, and Paris has the Panthéon, whose enormous dome dominates the Left Bank. Built as the church of Ste-Geneviève, the patron saint of Paris, it was later converted to an all-star mausoleum for some of France's biggest names, including Voltaire, Zola, Dumas, Rousseau, and Hugo. Pierre and Marie Curie were reinterred here together in 1995. Begun in 1764, the building was almost complete when the French Revolution erupted. By then, architect Jacques-German Soufflot had died—supposedly from worrying that the 220-foot-high dome would collapse. He needn't have fretted: the dome was so perfect that Foucault used it in his famous pendulum test to prove the Earth rotates on its axis. Time, however, has taken its toll on the Panthéon and the structure is now in the midst of an extensive, multiyear overhaul. The crypt and nave remain accessible to the public but the dome is expected to be closed until late 2015.