Check out the magnificent caves at Puente Viesgo (24 kilometres from Santander), where stalactites and stalagmites stretch among incredible prehistoric paintings. The village itself is also worth a look around. Tours start at the visitor centre 1.5 kilometres above the village.

Bellver Castle is a well-preserved 14th-century royal fortress with an amazing view over Palma Bay. For many centuries, the castle was used as a prison, and now it is one of the main tourist attractions on the island. The castle also houses the Palma History Museum, where you can learn more about the island's rich heritage.

Perched on the rocky edge of Mallorca, Castell d'Alaro is one of the island's most rewarding climbs, recommended by lovers of both history and nature. These ruins are a crumbling castle, several arched stone doors, and wall remnants are all that remains of what was once the fortress of 9th-century Christian warriors. If you're less adventurous, you may drive to the ascent to take in the stunning views over almost the entire island. In case you want to stay overnight, Castell d'Alaró also functions as a guesthouse. There's also a small bar and restaurant where you can recharge your batteries and enjoy a meal with fantastic views.