The Patek Philippe Museum is one of the world's most important horology museums, housing over 2,500 pieces spanning five centuries of watchmaking. Located in a 1920s Art Deco building, it features two main collections: the Antique Collection from the 16th to 19th century, and the Patek Philippe Collection from 1839 to present. Highlights include watches owned by royalty, rare enameled pieces, and the first wristwatch ever made.