Griffith Park spans roughly 4,300 acres and is home to the Hollywood Sign, the Old Zoo, the Autry Museum, and countless ...

Koryn Wicks' "Ghosts in the Machine," which uses augmented reality technology, takes participants up stairs, around pathways and into now-deserted enclosures. It's a haunting way to explore the park.

Griffith Park— People at the Old Zoo are talking to ghosts on their smart phones. An augmented reality experience called ...

Add Yahoo as a preferred source to see more of our stories on Google. George Mandella, 51, of Pasadena holds up his phone while playing the "Ghosts in the Machine: The Old Zoo" mobile game at old ...