The same streets, separated by 63 years.
The Google Street View images of 2nd Street and Grand Avenue in Downtown Los Angeles are modern. The black-and white images are taken from film shot in 1947 and intended to be used as background images for a feature film. Shot from moving vehicle, these images would be projected behind mocks-up of cars on sound stages.
These six minutes of 35 millimeter film from the Internet Archive show a Downtown that no longer exists.