The GEOCACHE is NOT at the LISTED COORDINATES!!! Although that’s a nice spot too and not too far away. In order to get the accurate coordinates, you must complete the Peace at Brookside Adventure Lab. The coordinates will be revealed to you when you complete 5th stage of the Adventure Lab. The container is a magnetic nano. Expect the Adventure Lab to take about 35-40 minutes although it could take longer if you look around a lot. Which I highly recommend. Definitely don't do this one if you are in a hurry or you will miss the enjoyment of it which is really the whole point. There are at least 3 paths back to parking from the Adventure Lab final stage and any of them work. Take your pick.
Brookside Gardens is a lovely place to spend some time. I hope you come back and enjoy it at many different times of the year because the displays are always changing.
The bonus cache should be a fairly quick find. No need to step off the pavement.
Thanks to snerdwing and Ari54321 for their guidance on this. This is the first cache I've placed and I had to go and make it complicated!
Enjoy!!!