The exact total number of castles in Spain is not readily available, but it’s estimated that there are over 2,500 castles and fortifications scattered across the country. These structures vary in size, style, and historical significance. Some are well-preserved and open to the public, while others lie in ruins, waiting to be explored by adventurous history enthusiasts.
Alcazar of Seville – Located in Seville, this stunning palace was originally built as a fortress in the late 12th century. It has since undergone numerous renovations and expansions, including being converted into a royal residence by King Alfonso VIII in the 13th century. Today, it serves as the official residence of the Spanish Royal Family when they visit Seville. The Alcazar also houses several museums, including the Museum of Andalusian Arts and Traditions.
Castillo de la Cierva – Also located in Seville, this impressive medieval fortress dates back to the 13th century. It played an important role in defending the city during various conflicts throughout history, including the Reconquista and the War of the Biscayas. The castle is now home to the Andalusian Center of Contemporary Art.
Alcazar de los Reyes Cristianos:
- Located in Cordoba, this medieval fortress was where the Catholic Monarchs Fernando and Isabel met with Christopher Columbus to discuss his first voyage to America.
- The exterior features terraced gardens with ponds, fountains, orange trees, topiary, and flowers. Inside, you’ll find displays of Roman mosaics.
- Ownership: Managed by the local authorities.
Castillo de San Carlos – This impressive fortress in Valencia was built in the 16th century to defend against pirates and invaders. It has a unique star-shaped design and is considered one of the best-preserved examples of its kind in Spain. Today, it houses the Science Museum of Valencia.
Castellu del Camp – Situated in the province of Granada, this castle dates back to the 11th century and was originally built as a defensive tower to protect the nearby town from invasions. Today, it serves as a museum showcasing the region’s history and culture.
Alhambra:
- This sprawling palace and fortress complex in Granada is renowned for its Moorish architecture and courtyards.
- Originally a residence for royalty in the 13th century, it later became a Christian court.
- Ownership: Managed by the Spanish government.
- Tip: Tickets to the Nasrid Palaces sell out months in advance, so consider booking a skip-the-line guided tour.

Castillo de la Fusta – Located in Girona, this medieval fortress dates back to the 14th century and served as a royal residence for the counts of Barcelona during the Middle Ages. It has been beautifully restored and now houses a luxury hotel.
Castillo de los Tres Aguas – Situated in Cordoba, this castle dates back to the 12th century and was built to protect the city from invasions. It has since undergone several renovations and expansions, including being converted into a hospital during the 16th century. Today, it serves as a cultural center and conference venue.
Castillo de Humay – Located in Toledo, this Moorish castle dates back to the 10th century and played an important role in defending the city during various conflicts throughout history. It has been beautifully restored and now houses a museum showcasing the region’s heritage.
Alcazar of Segovia:
- A UNESCO World Heritage Site, this castle palace is distinctive due to its boat-shaped design, which inspired Snow White’s castle.
- Explore the Hall of Ajimeces, the Hall of Kings, and the Hall of the Throne, and don’t miss photographing the stunning exterior.
- Ownership: Publicly managed.

Castillo de San Román – Situated in Cáceres, this impressive fortress dates back to the 11th century and was built to defend against attacks by Muslim forces. It has been beautifully restored and now serves as a museum showcasing the region’s history and culture.
Castillo de la Luz – Located in Almería, this castle dates back to the 13th century and was built to defend against pirates and invaders. It has been beautifully restored and now serves as a cultural center and museum.
Castillo de Monteagudàn – Situated in Granada, this medieval fortress dates back to the 14th century and served as a royal residence for the counts of Granada during the Middle Ages. It has been beautifully restored and now houses a luxury hotel.
Aljaferia Palace:
- Dating back to medieval times, this Islamic palace served as both a defense and a place of recreation.
- Today, it houses the Aragonese Parliament.
- Explore its striking interior rooms with coffered ceilings and Moorish-style arches.
These castles offer glimpses into Spain’s history, architecture, and cultural heritage. Whether you’re drawn to fairytale-like palaces or imposing military fortresses, these sites are a testament to the country’s turbulent past and architectural prowess.
