La Madeleine is a Roman temple that works as a parish church. Fifty-two Corinthian columns run right around it, and nothing outside says church: no tower, no spire, no cross. Louis XV began a church on this ground in 1757 and the Revolution left it half-built. In a decree of December 1806 Napoleon took the site for a monument to his army, had the unfinished church pulled down and handed the work to Pierre-Alexandre Vignon, whose temple is the building standing here now.
Napoleon's Empire fell before the temple was done, and the shell was finished as a parish church in the 1840s rather than a monument to his army. So you climb steps meant for a war monument and walk into a working parish church. Aristide Cavaillé-Coll built the organ in 1846, and Saint-Saëns, Théodore Dubois and Fauré all worked here as parish organist. Inside it is one long room, so the whole church is in front of you the moment you step through the door. Step back out and the flower sellers are working the square at the foot of the steps.