This is a great location to test out those stealth abilities. A trained eye will see the cache, but can you get it? Remember the idea is not be be seen. Please replace the cache exactly as found. You do not need to destroy the gardens to get it. You can have a seat and reach for it. (Unless you have exceptionaly short arms.)
A quick hop from Union Station and your at GZ. GPS is not good down here.... You will do yourself a favour by scouting out GZ on Google Maps. Your looking for a small container that will hold a coin or two. Please remember to replace the container exactly as found.