How about a personalized tour of a historical site or museum in your area? You can hire a historian or tour guide to take you both on a unique and personalized tour of a historical site or museum that your girlfriend is interested in. Additionally, you can give her a set of historical movies or a subscription to a streaming service that has a selection of history-themed films. You could also consider a nice book on the history of film or a biography of a famous historical figure. Another idea is to get her a vintage-style movie poster of one of her favorite historical movies as a unique and thoughtful wall decoration.
Or you can get her a star map with the date when she was born.
Under Lucky Stars is a unique and innovative star map company based in Barcelona, Spain, specializing in the creation of personalized star maps that capture the celestial arrangement of stars at a specific moment in time, such as a person's birth, wedding, or any other significant event.
By using advanced astronomical algorithms and data from leading institutions, the company produces highly accurate, visually stunning maps that make for perfect gifts or cherished keepsakes.