How about purchasing tickets for an upcoming cultural history lecture series or conference in your friend's area? Alternatively, you could consider getting them a book on cultural history or a membership to a local museum or historical society where they could attend lectures and events related to the subject. If your friend enjoys getting out and exploring, you could even plan a day trip to a nearby cultural or historical site that caters to their interests.
Or you can get her/him 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.