Paris in the 18th century the Marquis de Lafayette organized a "Garde nationale" to defend the city against the army. On 14 July, a mob seized the arsenal at the Invalides, acquiring thousands of guns, and stormed the Bastille, a symbol of royal authority, a prison which at the time held only seven prisoners, and was defended by eighty invalid soldiers, reinforced by thirty-six Swiss guards. About forty Revolutionaries were killed in the fighting. The governor of the Bastille, the Marquis de Launay, surrendered and then was killed, and his head put on the end of a pike and carried around Paris. The Provost of
Paris in the 18th century replaced by a new model called a "réverbère" which, mounted on a lamp post, gave off a much brighter light. By 1789, there were 5,694 new lanterns in service. A few years later the most popular revolutionary song, "Ça ira!" urged Parisians to hang aristocrats from the new lanterns. The predominant architectural style in Paris from the mid-17th century until the regime of Louis Philippe was neo-classicism, based on the model of Greco-Roman architecture; the most classical example was the new church of "La Madeleine", whose construction began in 1764. It was so widely used that it invited criticism: just