The Hollywood Hills were a mountainous region on Earth, an extension of Hollywood in Los Angeles, California. The Griffith Observatory and the Hollywood Sign were located there. (VOY: "Future's End")
In 2024, Raffaela Musiker and Seven of Nine witnessed a wildfire in the Hollywood Hills from the top of the Markridge Industrial Tower. (PIC: "Assimilation")
The teaser of VOY: "State of Flux" was filmed in the Hollywood Hills. ("Saboteur Extraordinaire: Seska", VOY Season 2 DVD special features)