Frederiksberg bibliotek was the final spot in the Copenhagen Real Street Competition in 2001. The old spot has now been destroyed because their are building a new metro station there.
It has been replaced by a new spot that includes a metal ledge just near the Copenhagen Business School (Handelshøjskolen), a rail near the gymnasium and some metal curbs/ledges near the gymnasium as well. It is possible to skate it all in lines.
Take bus number 29 from Vesterport S-station, or use the metro and get off at the Frederiksberg metro station.