What can I say about Guadalest, not only is the journey to the town spectacular the town itself is beautiful and one of my favourite places on the Costa blanca.
Located on the CV-70, 25 km from Altea, is the village of Guadalest. Occupying one of the most stunning positions in Spain, this small village is precariously perched on the pinnacle of a granite mountain, giving fabulous views across the valley carved out by the River from which the village takes its name.
Here is a lovely website that will give you some more information