TO FIND THE GEOCACHE: The coordinates will take you to a unique fountain in the middle of the garden. From there, go south to a small amphitheatre and inspect the large columns. You are looking for is a well camoed container (created and placed by gse33) about 5.5' up. You DO need to climb the stairs to the cheap seats. Please be extra stealthy, and replace the cache as you found it!
The garden can at times be a very high traffic area. Performances in the amphitheater or the concert hall will temporarily make access impossible. You can also take guided and self-guided tours of the property, when available.
Check out the original cache placement, too! It was in a unique, quiet area of the garden: From the fountain at the posted coordinates, go north toward the elevator, then go right down the narrow passageway. The cache was at the end.
At one point, there was also an actual letterbox in the same general area.