^^^Sopas_ej, I like the trivia about the sign shaped like a miner's spade.
It's a pretty cool photograph as well.
Civic Center proposals from the past.
Below: This plan for the Civic Center has a very interesting terraced area.
I can't tell if those are steps or a waterfall. You can see Union Station in the lower-right hand corner.
usc digital archive
below: This image of the proposed Civic Center area highlights an auto park.
usc digital archive