Elks Lodge No. 99 / Park Plaza Hotel (1930/2009)
Looking at the Elks Lodge from the east side in the middle of MacArthur Park. The building is from 1925 and by architect Claud Beelman. If you are lucky, there will be a nice guard who will let you in and look around. The interior is as spectacular as the exterior. MacArthur Park seems to be much nicer (understatement) than it was in the 90's when I worked in the area. I didn't see one person shooting up heroin. Mostly just a lot of family's and kids playing soccer.
This page has a list of movies that were filmed in this building:
It's not listed on that page but the swimming pool in Cocoon is in the basement of this building. It's where they had those strange alien egg things in the movie.