The cache is NOT located at the posted coordinates, neither is it in Sutton Park. The marker is at the parking area of the park though, it's well worth a visit.
Being from the Netherlands, the most often heard mistake abroad is people refering to the country as Holland. Unfortunately, that is about as correct as calling all of the United Koingdom England, or calling all of England Yorkshire. Two out of twelve provinces are called Noord (North) Holland and Zuid (South) Holland. As a lot of touristy things like Amsterdam, Den Haag, Rotterdam and Keukenhof are located there, the confusion is understandable. The national tourism website used to be called Holland.com, which didn't really help. (it's recently been changed)
To find this cache you have to solve the following puzzle first:
With the puzzle solved, the next step is to work out the coordinates. Link each numbered province to the capital city of that province.
Cache is located at:
N Assen Leeuwarden . Arnhem Arnhem . Zwolle Groningen Utrecht
W 's Hertogenbosch . Lelystad Middelburg . 's Hertogenbosch Lelystad (Maastricht - 's Hertogenbosch)
Good luck, feel free to send a message if you require a hint!