Fragonard Musée du Parfum (Perfume Museum) -- This museum is in a 19th-century theater on one of Paris's busiest thoroughfares. As you enter the lobby through a courtyard, the scented air will remind you why you're there -- to appreciate perfume enough to buy a bottle in the ground-floor shop. But first, a short visit upstairs introduces you to the rudiments of perfume history. The copper containers with spouts and tubes were used in the distillation of perfume oils, and the exquisite collection of perfume bottles from the 17th century to the 20th century is impressive.