Maybe you may also visit Rue Saint-Honoré, in which Robespierre lived along with Duplay family, and the Hôtel-de -Ville...O.K, it's not the same building from back then, since the original one was burned down by Commune Revolution in the 1870's, but it's the exact replica, so you may figure it out how it was in 1789-1794.

Other wonderful place to visit is the Conciergerie and the Palais of Justice, without mentioning Champs Elysées.

Paris is a great city, you'll see. Once you visits it, you will be always wanting to return.

HanriotFRan.