The following list, culled from the PDF document, contains 58 structures:

1)  Interpretive Center
2)  Visitor Center
3)  Eagle Aviary
4)  Eagle Holding Structure
5)  Wolf Holding Pen
6)  Condor Aviary
7)  Condor Holding Building
8)  Condor and Jaguar Viewing Building
9)  Jaguar Holding Building
10) Beaver and Water Fowl Aviary
11) Beaver Holding Facility
12) Restroom Building
13) Grizzly Holding Structure
14) Grizzly Underwater Viewing Structure
15) Grizzly Viewing Shed 1
16) Grizzly Viewing Shed 2
17) Mountain Lion Aviary
18) Mountain Lion Holding Building
19) Black Bear Holding Building
20) Interpretive Kiosk
21) Bison and Tule Elk Feeding Station
22) Bison and Tule Elk Holding Building
23) LSS Equipment Structure
24) Gondola Motor Station
25) Gondola Towers (7)
26) Elevated Walkway
28) Paved Path
29) Fire Roads A, B, C, D
30) Loop Walk
31) Botanical Exhibit
32) Campground Tents (14)
33) Campground Toilets (2)
34) Perimeter Fence
35) Exhibit Fences