@Jambo The lion (one) and tiger (two) exhibits are all quite impressive-- especially given their advanced age! They are very large, lushly planted hillside enclosures with small rock pools and wooden climbing structures.
@Great Argus Not quite. There are large stone walls that separate each of these mountainside enclosures, and they are each topped by castle-like turrets. It is from these turrets that these pictures were taken.
This picture shows what it looks like to walk down into one of the turrets: