How about a scratch-off world map? It's a map of the world that your boyfriend can scratch off the countries he has visited. This is not only a great decorative item for his home, but it also serves as a unique way to track his travels and it may inspire him to plan his next adventure. Additionally, you may want to consider a travel guidebook of a destination he's always wanted to visit or a coffee table book about world photography.
Or you can get him a star map with the date when he 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.