From Ledra Palace check point, walk straight passing the traffic lights until to a round about where there is a stone pointing monument in the middle. There do not turn left but take the second left main road where you will be crossing the Turkish Embassy and the Parliament building. At the end you find another small round about with a hand shape monument in the middle of it. Continue walking towards north and take the first right turn. The Center can be seen at the right corner of that street.