For our fancy night out in Paris we went to the Hemingway Bar at the Ritz, and also ate dinner in the main dining room. Everything about it was an experience to remember. The food was divine, the building is insanely beautiful, and the cocktails were delicious. They even come with a rose (which I am smelling above).
If you are in Paris and want to have a fancy night out, look no further than the Ritz. It don't disappoint. And, if you want the best cocktail in town, make sure to go to the Hemingway bar.