Peñíscola is located in the Castellon region and is very touristy. There is a medieval castle standing at the edge of the sea that is really worth visiting here.
The legendary town of Peñíscola, in Castellón, lies at the heart of the Costa Azahar, a vast stretch of coastline consisting of various beaches suitable for swimming, unless otherwise indicated by the flags dotted around the place from time to time. The town is built on a large promontory, literally in the middle of the sea, and is protected by various styles of fortification wall from different periods in the town's history, designed to protect the castle which stands overlooking the little peninsula. It is also home to a great many symbolic structures and charming buildings which are accessed via large gateways and various other types of entrance, making this one of Spain's most unique towns. However, other than visit the large number of 'must-see' attractions in the area, the best thing to do is follow your nose and explore the various periods in history, particularly the medieval Renaissance period, which have afforded this enchanting town such a rich heritage. Furthermore, Peñíscola is a major recreational hub, both by day and by night, with a very wide variety of activities and festivals for you to enjoy, as well as offering a great opportunity to familiarise yourself with the coast and the surrounding sierra. After all, it's no coincidence that this is the birthplace of the both the Film Festival and the Jazz Festival - could you think of a better setting in which to enjoy live music or watch a film?