This is one of the infamous and much discussed old roundhouses. They have two sides with a keeper area in the middle (doors on far right). Originally each side (such as the one shown here) would be split into two or more individual exhibits (with divider fences based on the smaller pillars). Lately many have been enlarged so that each side is a single exhibit, as was done here for ocelot.
(Note - this photo was taken by my cousin, who gave me permission to post it).
this looks fine as one enclosure. I can imagine they'd have been horrible when divided though. Was the roof area above the visitors originally covered over?
Yes I believe they were covered originally. I have no idea about blue billed curassow exhibit (as I said my cousin took this so I have not seen it myself).
One of the main problems with the 20+ roundhouse exhibits at Los Angeles Zoo is that there is a lack of height in all of the exhibits. Some of the roundhouse enclosures work just fine for the species but others (for example the ones with Siamangs or Steller's Sea Eagles) are atrocious.
