The Most Beautiful Castles, Palaces and Fortresses in Spain
18 places · updated 14 October 2026
In short: By our ranking, the most beautiful castles, palaces and fortresses in Spain are Tower of Hercules, Torre del Oro and Alhambra. The list covers 18 castles, palaces and fortresses. Last updated 14 October 2026.
Spain is a country shaped by frontiers. For nearly eight centuries Christian kingdoms and al-Andalus faced each other across a moving border, and Castile takes its very name from the castles that lined it. The Moors left alcazabas and palaces of carved stucco and water, the Christian kings answered with towering keeps and brick Mudéjar castles, and later the Habsburgs built royal seats of austere grandeur. Rome adds the oldest layer of all.
In Granada the Alhambra combines a Nasrid fortress with palaces of tiled courts, fountains and muqarnas ceilings, and in Zaragoza the Aljafería preserves an eleventh-century Islamic palace inside its walls. The Alcazaba of Almería climbs a ridge above the sea, and Seville's Torre del Oro, an Almohad watchtower, still stands by the Guadalquivir. The Tower of Hercules at A Coruña is a Roman lighthouse that has guided ships for close to two thousand years.
Castile is the land of the classic castle silhouette. The Walls of Ávila enclose the old town in a complete circuit of granite towers, the Alcázar of Segovia rises on a rock where two rivers meet like the prow of a ship, and the Castle of Coca is a Mudéjar fortress in patterned brick. The Royal Palace of Olite shows the court of the kings of Navarre, El Escorial reflects Philip II's monastery-palace, and in Barcelona Gaudí's Palau Güell and Domènech i Montaner's Hospital de Sant Pau bring the story into Catalan Modernisme.
In this list
| # | Place | Type | UNESCO |
|---|---|---|---|
| 1 | Tower of Hercules | Fortified tower | ✓ |
| 2 | Torre del Oro | Watchtower | |
| 3 | Alhambra | Palace | ✓ |
| 4 | Hospital de Sant Pau | Palace | |
| 5 | Walls of Ávila | City walls | ✓ |
| 6 | Palau Güell | Palace | ✓ |
| 7 | Royal Alcázar of Segovia | Castle | ✓ |
| 8 | Aljafería | Palace | ✓ |
| 9 | Castle of Coca | Castle | |
| 10 | Royal Palace of Olite | Palace | |
| 11 | Alcazaba of Almería | Castle | |
| 12 | Royal Monastery of San Lorenzo de El Escorial | Palace | ✓ |
| 13 | Lonja de la Seda | Palace | |
| 14 | Bellver Castle | Castle | |
| 15 | Royal Palace of Madrid | Palace | |
| 16 | Loarre Castle | Castle | |
| 17 | Royal Alcázar of Seville | Palace | ✓ |
| 18 | Palacio Episcopal de Astorga | Palace | ✓ |
01 Tower of Hercules
Torre de Hércules
Spain · 6.3 km from A Coruña43.386° N 8.406° W
- UNESCO World Heritage
Luis Miguel Bugallo Sánchez (Lmbuga) · CC BY-SA 3.0 What's easy to miss standing in front of it is that you're looking at two buildings stacked on top of each other.
Did you know? The 18th-century restoration was carried out by the naval engineer Eustaquio Giannini, and UNESCO later singled it out as exemplary for protecting the Roman core.
02 Torre del Oro
Spain · 2.9 km from Seville37.382° N 5.996° W
Fedoce1 (Fernando Domínguez Cerejido) · CC BY-SA 4.0 The tower grew in layers, and it is easy to read them from the riverbank. Above the Almohad drum sits a narrower twelve-sided stage generally attributed to the time of Peter I of Castile in the 14th century; on top is a small cylindrical lantern with a dome of golden tiles, added in 1760 by the military engineer Sebastian van der Borcht, architect of the Royal Tobacco Factory, after the Lisbon earthquake of 1755 had badly damaged the upper part.
Did you know? The naval museum opened on 24 June 1944 under Captain Julio Guillén Tato; its collection grew from 143 items in 1947 to 425 by 1992.
03 Alhambra
Spain · 1.3 km from Granada37.176° N 3.588° W
- UNESCO World Heritage
Image by janmichael from Pixabay Almost nothing in the palace decoration is there by accident. The Court of the Lions, its twelve stone lions supporting a fountain at the intersection of four channels, is a literal architectural translation of the Quranic description of paradise as a garden fed by four rivers — the geometry is theology, not just design.
Did you know? Some poems carved in the Palace of the Lions are written in the first person, as if the room itself were addressing the visitor.
04 Hospital de Sant Pau
Hospital de la Santa Cruz y San Pablo
Spain · 3.1 km from Barcelona41.413° N 2.174° E
Matinibz · CC BY-SA 3.0 The institution itself is far older. The Hospital de la Santa Creu was founded in 1401 by merging six small medieval hospitals, and its Gothic buildings in the old city now house the National Library of Catalonia. By the late nineteenth century they were overcrowded, and the bequest of Pau Gil, a Barcelona-born banker based in Paris who left part of his fortune for a new hospital dedicated to Saint Paul, made the move possible.
Did you know? Men's pavilions on the east side are named after male saints, while the women's pavilions on the west bear the names of female saints or titles of the Virgin.
05 Walls of Ávila
Muralla de Ávila
Spain40.657° N 4.707° W
- UNESCO World Heritage
Image by NakNakNak from Pixabay The figures are impressive. 5 km; they are on average 3 metres thick and 12 metres high, punctuated by more than eighty semicircular towers, the "cubos", and around 2,500 merlons. There are nine gates, each once watched over by a noble palace whose family was responsible for its defence.
Did you know? According to tradition, two masters of geometry, the Roman Casandro and the Frenchman Florín de Pituenga, directed the works, said to have taken just nine years.
06 Palau Güell
Spain · 0.9 km from Barcelona41.379° N 2.174° E
- UNESCO World Heritage
Piggyofdoom · CC BY-SA 4.0 The building's centre is a full-height hall that rises through the house and opens to a conical dome pierced with small holes that scatter daylight down through the room like scattered stars — a space that served simultaneously as a reception hall for entertaining Barcelona's elite and, on the floor below, as a private chapel where Mass could be said for the household.
Did you know? The hall's organ was rebuilt in 2012 by Albert Blancafort with 1,386 pipes and 22 stops.
07 Royal Alcázar of Segovia
Real Alcázar de Segovia
Spain40.953° N 4.133° W
- UNESCO World Heritage
Ángel Sanz de Andrés · CC BY-SA 4.0 The site has been fortified since Roman times, and a castle here is first documented in 1120. Most of what stands today grew between the twelfth and sixteenth centuries. The massive Tower of John II, raised in the first half of the fifteenth century, is the heaviest element of the composition: a square Gothic block with Islamic touches and a double Gothic window, climbed inside by a spiral stair of 156 steps.
Did you know? According to tradition, the carved Franciscan cord running around one hall was Alfonso X's penance for his excessive pride.
08 Aljafería
Spain · 0.9 km from Zaragoza41.656° N 0.897° W
- UNESCO World Heritage
Image by Pixels4Free from Pixabay Behind a severe ring of walls and towers the palace opens onto the Patio de Santa Isabel, a courtyard with pools and porticoes where the taifa architects pushed the arch to its limits. Mixtilinear and multilobed arches cross and interlace until they read more like lace than masonry, and the plaster is carved into dense geometric and vegetal patterns.
Did you know? The Troubadour Tower could originally be entered only through a small raised door reached by a portable ladder.
09 Castle of Coca
Castillo de Coca
Spain41.215° N 4.526° W
Ignacio Cobos Rey ( Lironcareto ) · CC BY-SA 2.5 The town of Coca passed in 1451 to Alonso de Fonseca y Ulloa, bishop of Ávila and later archbishop of Seville, who in 1453 received royal permission from Juan II of Castile to build a castle here. Work began some years later, and most of it was carried out by his nephew Alonso de Fonseca y Avellaneda, who had the fortress essentially complete by 1493 and used it as a palatial residence for lavish receptions.
Did you know? The Marquis of Cenete once attacked the castle in an attempt to free his betrothed, María de Fonseca, whom her uncle was keeping inside.
10 Royal Palace of Olite
Castillo de Olite
Spain · 37.6 km from Pamplona42.482° N 1.650° W
Jorab · CC BY 3.0 The complex grew in two stages around the Gothic church of Santa María la Real. The Old Palace, a thirteenth-century building on the site of a Roman fortification, was enlarged under Sancho VII and the Theobald kings; today it houses a state-run Parador hotel.
Did you know? In winter the garden trees were sheltered by awnings fixed to the walls, an early kind of greenhouse.
11 Alcazaba of Almería
Spain · 3.9 km from Almería36.841° N 2.472° W
ANE · CC BY 3.0 Construction began in 955, when the Caliph of Córdoba Abd al-Rahman III raised Almería to the status of a city, and the citadel was built in local sandstone over an earlier fort.
Did you know? On clear days the citadel's outline can be made out from about 55 kilometres away at sea.
12 Royal Monastery of San Lorenzo de El Escorial
Real Monasterio de San Lorenzo de El Escorial
Spain40.589° N 4.148° W
- UNESCO World Heritage
Image by hruskajar from Pixabay The first architect, Juan Bautista de Toledo, laid out the plan; after his death his pupil Juan de Herrera carried the work through and gave his name to the sober Herrerian style that proved widely influential. The plan is a grid of courtyards and passages. Tradition says it recalls the gridiron on which Saint Lawrence was martyred, though scholars more often trace it to descriptions of the Temple of Solomon.
Did you know? A fire in 1671 destroyed about 5,280 manuscript codices, including Francisco Hernández's multi-volume natural history of the Americas.
13 Lonja de la Seda
Spain · 2.5 km from Valencia39.474° N 0.378° W
Juan Mayordomo · CC BY-SA 4.0 The project was first drawn up around 1470–1471 by the master builder Francesc Baldomar. After his death his pupils Pere Compte and Joan Ivarra were commissioned in 1481 to carry it out, and the complex was built between 1482 and 1533.
Did you know? Among the carvers named in the building accounts were masons from abroad, including Laurencius of Picardy and Johan de Kassel.
14 Bellver Castle
Spain · 3.2 km from Palma de Mallorca39.564° N 2.619° E
Fedoce1 (Fernando Domínguez Cerejido) · CC BY-SA 4.0 What makes Bellver remarkable is its geometry. It is one of very few circular castles in Europe: a round two-storey building wrapped around a round courtyard, with a large cistern beneath the well-head at its centre. On the ground floor the courtyard is ringed by low round arches; above them runs an elegant Gothic gallery of pointed arches on slender octagonal columns, a combination also found in the royal palaces of Palma and Perpignan.
Did you know? Its chapel is dedicated to Saint Alphonsus Rodriguez, the Jesuit lay brother who lived and died in Palma.
15 Royal Palace of Madrid
Spain · 3 km from Madrid40.418° N 3.714° W
Image by ybernardi from Pixabay The site has been fortified for more than a thousand years. Muhammad I, the Umayyad emir of Córdoba, built a fortress here between about 860 and 880, and on its foundations grew the Alcázar of the Spanish kings. On Christmas Eve 1734 a fire that started in the rooms of the court painter Jean Ranc destroyed the Alcázar, along with many works of art; Velázquez's Las Meninas was saved.
Did you know? Statues of the Aztec ruler Moctezuma II and the Inca emperor Atahualpa stand among the sculptures on the palace facade.
16 Loarre Castle
Castillo de Loarre
Spain42.326° N 0.612° W
Image by matressa_ from Pixabay The first castle was built in the early decades of the 11th century under Sancho III of Pamplona, as a frontier outpost facing the Muslim territories: the royal building, the Queen's Tower with its paired arched windows, a chapel, the parade ground and a free-standing tower in front of the entrance date from that phase.
Did you know? The castle cistern could store up to 8,000 litres of water, essential for a garrison perched on a bare rock.
17 Royal Alcázar of Seville
Spain · 2.5 km from Seville37.384° N 5.991° W
- UNESCO World Heritage
Image by Danor from Pixabay The site began as a fortress around 913–914, under the Umayyad rulers of al-Andalus. Later Islamic dynasties enlarged it, and the Almohads, who made Seville their capital in the twelfth century, built a whole cluster of palaces here.
Did you know? The courtyard's Renaissance upper storey was added for Charles V between 1540 and 1572, to designs by Luis de Vega.
18 Palacio Episcopal de Astorga
Spain42.458° N 6.056° W
- UNESCO World Heritage
Elgamizzzz · CC BY-SA 4.0 The old palace burned down in 1886. Bishop Joan Baptista Grau, who like Gaudí came from the Catalan town of Reus and had known him since his years in Tarragona, gave the commission to his friend. Busy in Barcelona with the Palau Güell and the early Sagrada Família, Gaudí first designed the building from photographs and drawings sent to him from Astorga.
Did you know? Although built as a bishop's residence, the palace was never actually lived in by a bishop.
How this list is ranked
Places are chosen for how they look, not for how famous they are: each one has its own description and a photograph credited to its author. The order is a single world ranking that weighs the beauty of the place in curated photography together with how widely it is documented — the number of language editions of its encyclopedia article and how often that article is read in a year. The list is rebuilt as places are added, so the order and the counts on this page are always current.
Questions people ask
- What are the most beautiful castles, palaces and fortresses in Spain?
- On our list, Tower of Hercules ranks first, followed by Torre del Oro and Alhambra.
- Why is Castile called Castile?
- The name comes from the Latin castella, castles: the region was a frontier land densely fortified during the wars between the Christian kingdoms and al-Andalus.
- Who built the Alhambra?
- The Nasrid dynasty, the last Muslim rulers of Granada, built most of the palaces in the 13th and 14th centuries on an older fortress site. Emperor Charles V added a Renaissance palace inside the walls in the 16th century.
- Is the Tower of Hercules still a working lighthouse?
- Yes. It was built by the Romans, probably in the late 1st or early 2nd century, and remodelled in the 18th century, and it is the oldest Roman lighthouse still in use.
- How many castles, palaces and fortresses are on this list in Spain?
- The list covers 18 castles, palaces and fortresses.