On my first visit I had not been able to climb to the castle. This time I decided I would. There is no road and for much of the climb you have to follow some goat trails or just trust your luck. The climb was well worth the trouble: the views from ever increasing heights on the old town were impressive, and at the top the sight of the coastline to the west was spectacular.
It is very windy up here, I was glad to have some cover near the top. If you ever go there: be careful, there are some shrubs that seem to sit on solid ground near the edge, in reality they cling to the side, stepping on them would land you deep, deep down.