Bung Ho !
We hope you are enjoying your time in our wonderful city.
There is plentiful free parking near this cache so can be done as a park-and-grab or part of the riverside walk.
You're looking for a disguised micro/small cache.
This is located in a very high muggle zone, so please be discreet and use care when retrieving and replacing this cache, as it is homemade and not easily replaced.
Enjoy.