noun
fascination
fas-ih-NAY-shun/ˌfæsɪˈneɪʃn/
Strong interest or attraction that holds attention.
The visitor watches the mechanical exhibit with fascination.

Etymology
Latin fascinare meant to bewitch or enchant. Fascination shifted from the act of casting a spell to an absorbing attraction that holds someone's attention as though under a spell.
In context
Heinrich himler head of the SS had a deep fascination with the occult and believed the Caucasus might hold Clues to the origins of the the Arian race him's organization the ananura scoured the world for ancient knowledge