Know Before You Go
It's located two miles from Cullen and has brown tourist attraction signs leading to the car park. The address will take you to a small car park by a farm. Walk behind farm and down the track by the beehive dovecot. At the end of the track you will see the castle over the edge. A trip down to the castle is definitely worth it as the best views aren't seen from the top view point. Be careful as path is steep and cliff edge exposed at some parts.