Montblanc is an unbeatable purveyor of writing instruments and timepieces. Its Königsallee boutique offers platinum-plated tie bars, historical chronographs and pens inspired by the heroines of the silver screen, including Marlene Dietrich and Ingrid Bergman. The shop is a discreet affair, and the unobtrusive staff are able to guide you swiftly to the products that make the most thoughtful gifts.