You are looking for a small waterproof container hidden in a standard way. It is accessible without leaving the asphalt, so please do not tear up the greenery. There is room for trade items, coins, and small trackables, but BYOP.
This cache was placed as part of the A. V. Geocachers Pi Day Event on 3/14/2015 at nearby Skytower Park. You might be interested to know that the value of Pi to quite a few decimal places is
3.14159265358979323846264338