Established in 1917, Juwelier Wagner is famous for its opulent, stylish watches. Rolex, Bulgari, Chopard, Jaeger-LeCoultre, Cartier and Chanel are among the luxury brands stocked at the boutique. There are diamond earrings, pendants and cocktail rings, too, if the trend for sparkle inspires you. Look to the own-brand accessory collections for suitably chic gift ideas.