The Panthéon’s panoramic experience offers 360° views of Paris from its colonnaded dome. he ascent up 206 steps passes through the architectural levels of the dome to reach a circular terrace with unobstructed view of landmarks including the Eiffel Tower, Notre-Dame, the Montparnasse Tower, and the Sacré-Coeur Basilica.
The Panthéon de Paris, located atop Montagne Sainte-Geneviève, was originally commissioned by King Louis XV as a church dedicated to Sainte-Geneviève, Paris' patron saint, in 1744. The neoclassical design by Jacques-Germain Soufflot was completed in 1790 under Jean-Baptiste Rondelet, in the middle of the French Revolution and it was transformed into a mausoleum for distinguished French citizens, modeled on the Roman Pantheon, including Voltaire, Rousseau, Victor Hugo, Marie Curie, and Jean Moulin. In 1851, Foucault famously demonstrated Earth’s rotation from beneath its dome with his pendulum experiment.