Let me add a bit about Angeles Abbey. The reason it looks so much like the awesome and aforementioned "63 Acres Done as Tunisian City"
Expo is because they were both designed by Long Beach architect Hugh R Davies—that is, Davies designed the main mausoleum in Compton in '26, opens in '27, and fair organizers nabbed Davies therefrom to do the Pacific Southwest Expo of '28.
Angeles Abbey gets confusing because there are multiple minaret'd structures, yes. Here is the 1927 mausoleum by Davies. (Images mine unless otherwise noted.)
Although in terrible shape (and having a sketchy history involving
murder, and burying people under roads) it is still pretty grand—
See in the above image the Judson Studios art glass window? That's of the
Angelus:
Which is at once a painting of prayer and a funeral for a dead baby, depending whom you ask.
Once it was all alone in the cemetery, like so:
lapl
Then they added on this about 1930, which I presume is also by Davies:
And then in 1931 they added the "Abbey of the Flowers" mausoleum to the north, which is not by Davies, but by Clarence N Aldrich:
LA Times via Proquest
Which is why there are three Islamic-y mausolea there today, as such:
bingmaps
The main dome was once covered in Islamic tile.
calisphere/
esotouric
The main mausoleum is chock full of Calco and Claycraft, mostly Calco, made in South Gate. The later mausoleum to the north is full of American Encaustic tile, made in Vernon. Some shots
here.
Just an amazing place. Leaving aside it being consecrated ground and all, it deserves better.