2 Best Sights in Denia, Catalonia, Valencia, and the Costa Blanca

The most interesting architectural attraction here is the castle overlooking the town, and the Palau del Governador (Governor's Palace) inside. On the site of an 11th-century Moorish fortress, the Renaissance-era palace was built in the 17th century and was later demolished. The fortress has an interesting archaeological museum as well as the remains of a Renaissance bastion and a Moorish portal with a lovely horseshoe arch.

About 15 km (9 miles) inland from Dénia, this 400-yard-long cave was named for the 12 Moorish skulls found here when it was discovered in 1768. The cave of stalactites and stalagmites has a dome rising to more than 60 feet and leads to an underground lake.