Spain's Best Castles

Explore Spain's legendary fortresses, hilltop castles and medieval strongholds surrounded by some of Europe's most spectacular landscapes.

Alcázar of Segovia, Castilla y León Image: Ángel Sanz de Andrés (CC BY-SA 4.0) via Wikimedia Commons

Spain is a country where history rises from the landscape itself. Across mountains, plains, coastlines and ancient cities stand thousands of castles built by Roman generals, Islamic rulers, Christian kingdoms and medieval nobles.

From the fairy-tale towers of Segovia to the windswept fortresses of Andalucía, Spain's castles tell the story of a country shaped by conquest, culture and changing civilisations.

For outdoor travellers, these castles offer far more than historic sightseeing. Many sit above hiking trails, cycling routes, national parks and rural landscapes where visitors can combine camping adventures with journeys through Spain's dramatic past.

Image: Ángel Sanz de Andrés (CC BY-SA 4.0) via Wikimedia Commons

Alcázar of Segovia

Castilla y León

Few castles in Spain capture the imagination quite like the Alcázar of Segovia. Rising dramatically from a rocky ridge between the city's ancient walls and the surrounding Castilian plains, this fortress looks almost like something from a fairy tale. Its distinctive towers and slate roofs helped inspire castles in popular culture.

Originally built as an Arab fortress and later transformed into a royal residence by Christian monarchs, the Alcázar played a major role in Spanish history. It was one of the favourite residences of Queen Isabella I of Castile, who left the castle to be crowned queen in Segovia in 1474.

Visitors can explore the royal rooms, armour collections and medieval halls before climbing the tower for spectacular views. The nearby Roman aqueduct, forest trails and Sierra de Guadarrama mountains make this an excellent base for walkers.

Best for: A fairytale fortress and views over Segovia's old town.

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Image: Jebulon (CC0) via Wikimedia Commons

Alhambra Palace Fortress

Granada, Andalucía

The Alhambra is one of Spain's most extraordinary historic sites and one of the finest examples of Islamic architecture anywhere in Europe. Built by the Nasrid rulers of Granada during the final centuries of Muslim rule in Spain, this hilltop palace-fortress combines defensive walls with breathtaking gardens, courtyards and decorated halls.

Although often described as a palace, the Alhambra was also a powerful fortress controlling the city below. Its towers, gateways and walls protected the last great Muslim kingdom of Spain before Granada fell to Ferdinand and Isabella in 1492, ending the Reconquista.

Visitors can explore the Nasrid Palaces, Generalife gardens and ancient defensive towers while enjoying views towards the Sierra Nevada mountains, which offer incredible walking routes and rural campsites.

Best for: Islamic architecture beneath the Sierra Nevada.

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Image: Josue Mendivil (CC BY-SA 2.0) via Wikimedia Commons

Castle of Loarre

Aragón

Standing dramatically on a rocky outcrop in the foothills of the Pyrenees, Loarre Castle is considered one of the best-preserved Romanesque castles in Europe. Built during the 11th century, it was created as a frontier fortress during the Christian campaigns against Muslim-controlled territories.

Unlike many Spanish castles that became royal residences, Loarre remains remarkably close to its original military purpose. Thick stone walls, defensive towers and ancient chapels reveal how medieval soldiers lived and defended the borderlands.

The castle's isolated mountain setting makes it especially appealing for outdoor travellers, combining a visit with hiking routes through Aragón's countryside and stays at rural campsites in the Pyrenean foothills.

Best for: A Romanesque frontier castle in the Pyrenean foothills.

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Image: PMRMaeyaert (CC BY-SA 3.0 es) via Wikimedia Commons

Castle of Belmonte

Castilla-La Mancha

Located among the open landscapes of Castilla-La Mancha, Belmonte Castle is one of Spain's finest examples of a restored medieval fortress. Built in the 15th century by nobleman Juan Pacheco, the castle reflects the wealth and power struggles of late medieval Spain.

Its unusual star-shaped design, imposing towers and carefully restored interiors make it one of the country's most impressive castles to visit. The fortress has also appeared in films that used its authentic medieval atmosphere.

Visitors can walk the battlements, explore medieval rooms and enjoy views across the surrounding plains. Its rural location makes it ideal for cycling, walking and countryside camping.

Best for: A restored star-shaped castle on the Manchegan plains.

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Image: Schwerdf (CC BY 4.0) via Wikimedia Commons

Castillo de Gibralfaro

Málaga, Andalucía

High above Málaga's Mediterranean coastline sits Castillo de Gibralfaro, a fortress built by the Nasrid rulers to defend the city's important harbour. Connected to the nearby Alcazaba fortress, it formed one of the strongest defensive systems in medieval Andalucía.

The castle's thick walls and strategic hilltop position demonstrate the importance of Málaga as a trading port between Europe and North Africa. After the Christian conquest in 1487, the fortress became a symbol of the changing power of the region.

Today, visitors can walk along the ancient ramparts while enjoying some of the best views in southern Spain, stretching across Málaga, the Mediterranean Sea and the surrounding mountains.

Best for: Ramparts with panoramic views over Málaga and the sea.

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Image: ANE (CC BY 3.0) via Wikimedia Commons

Alcazaba of Almería

Andalucía

The Alcazaba of Almería is one of Spain's largest Muslim fortresses and a spectacular reminder of the power of the medieval Islamic kingdom of Al-Andalus. Built in the 10th century under Caliph Abd al-Rahman III, it protected one of the most important ports in the region.

The fortress covers a huge hilltop area with defensive walls, gardens, military quarters and viewpoints overlooking the city and coastline. Unlike many castles that focus only on warfare, the Alcazaba reveals how these complexes functioned as entire communities.

Visitors can explore centuries of Islamic and Christian history while enjoying views towards the desert landscapes of eastern Andalucía. The nearby Cabo de Gata natural park provides beaches, hiking trails and camping.

Nearby: The Cabo de Gata natural park and its beaches.

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Image: Lodevermeiren (CC BY-SA 4.0) via Wikimedia Commons

Peñíscola Castle

Valencia

Built on a rocky peninsula overlooking the Mediterranean, Peñíscola Castle is one of Spain's most dramatic coastal fortresses. Constructed by the Knights Templar in the 13th century on the foundations of an earlier Arab fortress, it combines religious, military and political history.

The castle became famous as the residence of Pope Benedict XIII, known as the "Pope of Peñíscola", during the Western Schism when rival popes competed for authority in Europe.

Visitors can explore the medieval rooms, towers and walls while enjoying panoramic sea views. Its coastal location makes it perfect for combining castle exploration with beach camping, cycling routes and Mediterranean adventures.

Best for: A Templar castle on a Mediterranean peninsula.

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Image: Paradores (CC BY-SA 4.0) via Wikimedia Commons

Castle of Cardona

Catalonia

Perched above the town of Cardona, this impressive fortress was one of the most powerful castles in medieval Catalonia. Built by the influential Cardona family, it controlled important salt mines that brought enormous wealth to the region.

The castle's strategic position made it a key defensive site during centuries of political conflicts between Catalan nobles and royal powers. Its Romanesque church, enormous walls and medieval towers remain remarkably preserved.

Visitors can explore the fortress and surrounding countryside, with walking routes through Catalonia's rural landscapes. It is an excellent stop for travellers exploring by bike, campervan or hiking route.

Nearby: The Cardona salt mountain and rural Catalonia.

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Image: Fpl6025 (CC BY-SA 3.0 es) via Wikimedia Commons

Castle of Coca

Castilla y León

Castle of Coca is one of Spain's most unique medieval castles, famous for its beautiful brickwork and impressive defensive design. Built in the 15th century, it represents the transition between traditional medieval fortifications and more advanced military architecture.

Unlike many stone castles, Coca was constructed mainly from brick, giving it a distinctive appearance with decorative towers, patterned walls and elegant details.

Visitors can tour the interior and admire the unusual architecture before exploring the surrounding forests and countryside. The quiet rural setting makes it ideal for slow travel, cycling and camping through Castilla y León.

Best for: Spain's finest Mudéjar brick castle.

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Image: Reinhardhauke (CC BY-SA 3.0) via Wikimedia Commons

Castle of Javier

Navarra

Located near the Pyrenees in northern Spain, Javier Castle is one of Navarra's most important historic landmarks. Built between the 10th and 13th centuries, it was the birthplace of Saint Francis Xavier, one of the founders of the Jesuit order.

The castle combines medieval military architecture with religious history, featuring towers, walls and historic rooms connected to the life of its famous resident.

Visitors can explore the fortress while enjoying Navarra's beautiful landscapes of forests, mountains and rural countryside. Nearby walking routes and campsites make it an excellent destination beyond Spain's famous cities.

Best for: Religious history in the Navarran foothills.

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