A few examples of media that come to mind (I apologize for mentioning non-book fiction too) are –
The Da Vinci Code
Man From Earth
Contact
Interstellar
Basically that explain human existence separate from mainstream science and stays with you for some time. Makes you think about our place in the universe.
I’m okay with said books having aliens, or mystical beings. Even reinterpretation of existing history is game, just, the said books should strictly be fiction. Thank you!
by CookieDontCookie