There aren't "Rabbit Tests" any more (which is a really good thing, especially for the rabbit), but when there were, you likely had to come to this place (close by this cache) to have it done.
There have been a number of geocaches in this part of town in the last few years, all of which have been archived. It is a very high muggle area, for a number of reasons. The only truly safe time to be searching for caches in this part of time is after dark. And then, only sometimes. Maybe this one will last longer than the others!