How about getting her a gift certificate for a historical tour in a new city? You could choose a city that she hasn't been to yet, but may interest her based on her historical interests. Alternatively, you could consider buying her a book on a specific historical event or time period that she has shown interest in, or a historical novel that takes place in a setting she enjoys. For a unique gift, you could create a personalized historical tour in your town or nearby area, highlighting locations that you think would interest your wife. You could also pair any of these gift ideas with some historical-themed jewelry or clothing.
Or you can get her a star map with an important date you share.
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.