This is a top-notch, fairly naturalistic environment for lion-tailed macaques as the terrain is varied and impressively designed. The exhibit is even larger than what is shown in the photo, and with grass, waterways, shade, hammocks, embankments, etc, it really is quite ideal for its inhabitants.
I think that the Woodland Park Zoo's lion-tailed macaque might be the only one in North America that gives San Diego a run for its money, although San Diego wins out in my opinion due to the slightly larger enclosure and the fact that in Seattle the primates are difficult to locate:
