The cache is not located at the listed coordinates, but that is a good place to park.
To find this cache, you must:
(1) collect information from a signboard near the listed coordinates;
(2) use that information to solve a simple puzzle;
(3) input the solution into a Reverse Wherigo game cartridge (aka "box") which will lead you to the cache container; and finally,
(4) you must sign the logbook to claim a find.
The final is inside Riverside Park.
The puzzle
From the listed coordinates you will be able to see a road sign. On the last line of the sign are the letters E. M. C. followed by a series of digits. Let the digits be AB.CD.EFG. Substitute the values for F and D in the three 6 digit numbers below.
F39328
4275D2
244252
The Reverse Wherigo
You can download the Waldmeister Reverse Wherigo cartridge to your GPS or smartphone here. To play on a smartphone, you will need a Wherigo player app, such as Wherigo for IOS or WhereYouGo for Android. To find out if your GPS supports Wherigo, see this forum thread.
Start the Wherigo game cartridge and enter the two letter language selection (en for English). Select your preferred distance units (meters or yards). Read the instructions for using the cartridge. Select Play. The cartridge will then ask you to enter the three lines from the puzzle above.
It is suggested that you take these numbers with you on your journey. They will be needed if it becomes necessary to restart your player for any reason.
Optional
When you have reached the final, you will be given some statistics on your quest. If you wish, you may enter the details into your log, and also post the number of times you calculated the distance.