griend, Maastricht Netherlands
Smooth and long marble ledge with a good run up and landing spot. You could get send away after a few minutes of skating by security.
It's in the south-east of Maastricht near the MECC park a lot. By bus; take busline 9 and get out at Endepolsdomein. Walk back and take a left, then walk straight ahead until you see it. By train; get out at Maastricht Randwijck, walk of the platform, take a right, another right, then left, then straight ahead until you see the ledges.