How about gifting him a private guided tour to a historical place that he has always wanted to explore? You can check for nearby historical sites and book a guided tour with an experienced historian who can accompany him and give him an in-depth understanding of the place. You might also consider gifting him a book about the history of a particular place he is interested in or an audio guide for self-guided tours. Additionally, you can gift him tickets to a local historical museum, which is informative and engaging.
Or you can get 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.