Travel - in this category a wide variety of hobbies have gathered
You can after all travel to museums of the world or to restaurants, seas or by land, hitchhiking or on your own car. Travel will remain on a long memory, if you shoot your way on the car with the help of car DVR.
Who is keen on this? People who know how to appreciate the beauty of life in all its manifestations. They read a lot and can answer almost any question, but they will not believe anything until they have proof. In the book "Equation of Happiness" writes that hobbies that are not related to professional activity allow using those abilities, those parts of the brain that are not used during work.