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Louis XVI and the royal family were brought to Paris and made virtual prisoners within the Tuileries Palace. In 1793, as the revolution turned more and more radical, the king, queen, and the mayor were guillotined, along with more than 16,000 others (throughout France), during the Reign of Terror. The property of the aristocracy and the church was nationalised, and the city's churches were closed, sold or demolished. A succession of revolutionary factions ruled Paris until 9 November 1799 (coup d'état du 18 brumaire), when Napoléon Bonaparte seized power as First Consul.

When did Napoleon Bonaparte gain power as the First Consul?
9 November 1799