After attending a caching event at Comprehensive Park, I headed along the Awase seawall in search of a geocache called, "Sumo Jacks." The seawall is constructed of large concrete pilings that are shaped like giant jacks (as in the game, not the device for lifting cars).
I wasn't able to make the find because there were a couple of locals sitting right on top of it.
I did take a couple of pictures though.