A monument to the St-Germain quarter’s intellectual past, Café de Flore is a must-sip on the cafe tour circuit. Seemingly every great French intellectual and artist has had his or her moment here: Poets Apollinaire and André Breton wrote here; artists Zadkine, Picasso, and Giacometti came to take refuge from Montparnasse; literary and theatrical stars came to preen; and of course, philosophers gathered to figure out the meaning (or nonmeaning) of life. During World War II, Simone de Beauvoir and Jean-Paul Sartre more or less moved in, and Sartre is said to have written his trilogy “Les Chemins de la Liberté” (“The Roads to Freedom”) here. The atmosphere now is less thoughtful and more showbiz, but it still may be worth an overpriced cup of coffee just to come in and soak it up.