Great views, no crowds, and very relaxed vibe. There is an indoor level on the 56th floor if the…read moreweather isn't good. There's a gift shop here. 3 floors up is the open air roof top patio. Strategic breaks in the plexiglass give clear shots for your camera. Comfortable chairs are scattered about, as well as selfie stations. Staff were chill and didn't rush anyone away. Would definitely recommend. Inexpensive as well.

If you want beautiful city views with the Eiffel Tower, going to the top of this observatory should…read morebe on your to do list. It's beautiful and if you go later in the day, there aren't as many crowds.

From the owner: Le plus vieil observatoire du monde Construit en 1667 sur l'ordre de Colbert, il définit par sa…read moreligne médiane le méridien de Paris jusqu'en 1911, date de l'adoption du méridien de Greenwich. Ses quatre façades, orientées vers les points cardinaux, abritent toujours un important centre de recherche astronomique. Quant aux pavillons du jardin, ils accueillent un petit musée exposant des instruments anciens d'observation.