Considering the Aguamarina in Alicante?
A VT member wrote the following comment about visiting Alicante:
The Castillo de Santa Barbara... by la_beba
The Castillo de Santa Barbara is one of the largest medieval fortresses in Europe. It occupies the entire summit and a large proportion of the slopes of the Benacantil mountain. It commands a unique look-out over the coastline, the Bay of Alicante and the surrounding farmland. Remains from the Bronze-age have been discovered on this site. The castle has three enclosures of differing dates, each with unique features. The castle can be accessed by a road leading up the western slope of the mountain, winding it's way through pine trees..... or for a small fee take the elevator from the entrance in front of the beach.