Best attractions and places to see around Castrillón, a municipality on the central coast of Asturias, Spain, offer a diverse range of experiences. The region is known for its extensive coastline, featuring numerous beaches and significant dune systems like Playón de Bayas and Dunas de El Espartal. Castrillón also presents a rich cultural and industrial heritage, including historical sites and unique landmarks. These features make it a notable destination for exploring natural landscapes and cultural history.
Last updated: May 9, 2026
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Highlight • Historical Site
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If we encounter the patronage of a Saint Thomas, then for most people outside Great Britain, their thoughts probably go back two thousand years to the time of Christ. This is because one of the twelve apostles whom Jesus called to follow him bears this name. In the accounts of the evangelists, he is given the epithet 'Didymus', which means 'twin' in German. However, in this case, the chosen patronage refers to Saint THOMAS BECKET (1118 to 1170), also known as THOMAS of CANTERBURY after the place of his bishopric and martyrdom. Incidentally, Canterbury Cathedral (County Kent, England) can be visited – at least virtually in the komoot system – via the following link: =>> https://www.komoot.com/de-de/highlight/231266
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Definitely worth checking out.
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On arriving, you might think ok the outside looks good, but you must take the time to go in and look, the inside is stunning and the altar is stunning
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It is a beautiful palace and garden complex in Asturias, Spain, built by two wealthy brothers who loved art and culture. The palace has an impressive collection of paintings, carpets, furniture and other precious objects. The gardens are an example of European landscape art, with different styles and elements. It is also called the Versailles of Asturias because it is so beautiful and grand
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Rolling along the Nalón River we find beautiful views of the most important river mouth in the region. The castle was built by Alfonso III to have good control of the coast and the estuary.
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Rolling through Asturias we find ourselves on the bridge that crosses the longest and mightiest river in the province, the Nalón river. From here we will have a beautiful picture of the surrounding area.
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Castrillón is celebrated for its stunning coastline, featuring numerous beaches and significant dune systems. You can visit Playón de Bayas, the longest sandy beach in Asturias with an important dune system, or explore the extensive Dunas de El Espartal. The Isla de la Deva, the largest island on the Asturian coast, is also a protected natural area. For birdwatching and hiking, the Ria de Avilés Natural Reserve offers great opportunities.
Yes, Castrillón boasts a rich historical heritage. You can explore the Castillo de San Martín, a historically significant castle located on the right bank of the Nalón river, offering excellent views. Another notable site is the Castillo de Gauzón on the Peñón de Raíces, famous as the place where the 'Cruz de la Victoria' was forged.
Castrillón offers several cultural highlights. The Mina de Arnao is a symbolic mining heritage complex, recognized as the first documented mineral coal mine on the Iberian Peninsula and Europe's only underwater mine. You can also visit the Museo de Anclas Philippe Cousteau in La Peñona de Salinas, a tribute to Philippe Cousteau.
Many attractions in Castrillón are suitable for families. The Castillo de San Martín and the Bridge over the Nalón River are great for exploring with children. Additionally, the Quinta de Selgas, with its beautiful gardens and art collection, is also listed as family-friendly, though it's important to note its limited summer opening hours.
Castrillón is excellent for outdoor enthusiasts. You can find numerous routes for various activities. For hiking, consider the Coastal Path from Playa del Puerto to Arnao and the Anchor Museum. If you enjoy running, the Playa de El Espartal to Playa de El Puerto via the Senda Norte is a popular choice. Road cycling routes like the Niemeyer Center – San Juan de Nieva Lighthouse loop are also available.
You can visit the Selgas Palace and the Jesús Nazareno Church‑Pantheon, a neoclassical palace with a 17th-century church converted into a family pantheon. The Church of St Thomas of Canterbury in Avilés, often called the 'Cathedral of Avilés,' is another significant religious and architectural landmark.
Yes, Castrillón offers several spots for scenic views. The Castillo de San Martín provides an excellent visual domain over the Nalón river's mouth and estuary. Additionally, the Bridge over the Nalón River offers a beautiful perspective of the surrounding area where the river forms the Pravia estuary.
The Mina de Arnao stands out as a unique industrial heritage site. It was the first documented mineral coal mine on the Iberian Peninsula and Europe's only underwater mine, with its headframe and restored underground galleries showcasing Asturias' industrial past. The area also features exceptional fossil sites.
Visitors appreciate the diverse experiences Castrillón offers. They enjoy the historical significance and strategic views from sites like Castillo de San Martín, and the artistic and architectural beauty of places like Selgas Palace. The natural beauty of the coastline and the opportunities for outdoor activities are also highly valued.
Absolutely. Many of Castrillón's beaches are popular for water sports. Beaches such as Salinas, San Juan de Nieva, Arnao, and Santa María del Mar are ideal for surfing, longboarding, bodyboarding, and windsurfing. Salinas beach even hosts the annual Salinas International Longboard Festival.
Beyond the main attractions, Castrillón offers charming ethnographic sites. Villages like Teboyas and Peñarrey provide insights into the region's traditional architecture and heritage, offering a glimpse into local life away from the more frequented spots.


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