The movie studios were (and still are) so vast that they’re almost cities unto themselves, with their own post office, fire department, police force, and power generators. Universal Pictures went one step further and called their studio lot Universal City. The caption for this shot of the backlot said it was taken circa 1915, which was the year the studio was founded. I’d say it was a little later because that backlot looks very developed for a nascent studio. Regardless of the specific year, we can see how those sets looked from the rear. The large one on the right was probably a castle, fort, or palace, but in reality, it’s just a bunch of wooden scaffolding.