Best attractions and places to see around Biel include a diverse landscape featuring impressive rock formations and scenic viewpoints. This region offers opportunities for exploring natural monuments and charming villages. Visitors can discover unique geological features and historical sites within this area.
Last updated: June 22, 2026
Highlight • Natural Monument
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Popular around Biel
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You must walk around the alleys of Agüero, and there is a magnificent view of the Mallos de Agüero.
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Spectacular reddish colored rock formations.
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The city is home to artistic treasures such as the Romanesque Church of El Salvador and the 12th-century Church of Santiago. The latter, located one kilometer from the city, has been declared a National Monument and is one of the most beautiful Romanesque temples in Aragon.
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The Mallos of the Aragonese Pre-Pyrenees were formed 65 million years ago after eroded material from the Pyrenees washed away.
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Agüero's mallos are a little less tall than those of Riglos, but even so, they are charming whims of erosion. Its contrast with the blue sky on a sunny day is simply spectacular.
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The ruins found on the track that connects Luesia with the Pígalo pools are known as the castle of Sibirana. The ruins of the hermitage of Santa Quiteria also remain from this deserted area. This nucleus is part of a defensive line ordered to be built in the 10th century by King Sancho Garcés I of Pamplona. The sight of the towers erected on two stone masses gives an idea of the magnitude and engineering of these structures.
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On our way along the track from Luesia to the Pígalo pools, we come across the castle of Sibirana built to control the passage from Uncastillo and from Luesia through the Onsella river valley. In addition to the castle, there are remains of the hermitage of Santa Quiteria, both in the Aragonese Romanesque style and of a dozen houses at the foot of the castle on its south face.
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The mallos de Riglos are one of the most popular geological formations in the province of Huesca. Although there are more similar mallos in the region, these are the most impressive and also especially frequented by climbers.
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The region around Biel is renowned for its dramatic natural monuments. You can explore the impressive Peñas de Riglos, a natural monument popular with climbers and offering spectacular views. Another must-see is Mallos de Agüero, featuring unique reddish-colored rock formations ideal for observing bird colonies. Don't miss the Foz de Escalete, a gorge that opens onto the Peña reservoir, offering a scenic passage between rocks.
For breathtaking vistas, head to Camino del Cielo - Panoramic View. This viewpoint offers impressive sights of the surrounding plains and the Gállego river, especially near the top of Mallo Colorado. You'll get amazing views over Riglos and the expansive landscape.
Absolutely. The town of Riglos, nestled among the magnificent Peñas de Riglos, is a beautiful place to wander its streets and appreciate the magnitude of the rocks. Additionally, Agüero Village, located at the foot of the Mallos de Agüero, is home to artistic treasures like the Romanesque Church of El Salvador and the 12th-century Church of Santiago, making it well worth a visit.
The area around Biel is excellent for various outdoor activities. You can find numerous hiking trails, including challenging routes like 'Puy Moné and the Sierra de Luesia' or 'Puy Fonguera - Cabo Bal - Puy Moné'. For cycling enthusiasts, there are road cycling routes such as the 'Roadbike loop from Salinas de Jaca' or the 'Biel Castle – Santuario de Monlora loop'. Trail running is also popular, with options like 'Puy Fonguera - Cape Bal - Puy Moné'. You can find more details on these activities in the dedicated guides for hiking, road cycling, and running around Biel.
Yes, near the prominent rock formations, you can find trails that offer stunning views and a chance to get closer to these natural wonders. For instance, there's a quick hike around the Camino del Cielo that provides impressive vistas of the surrounding plains and the Gállego river. The area around Peñas de Riglos is also popular for hiking, allowing you to experience the magnitude of the rocks up close.
Visitors frequently highlight the spectacular natural beauty and the unique geological formations. Many are impressed by the sheer magnitude of the rocks at Peñas de Riglos and the charming whims of erosion seen at Mallos de Agüero. The impressive panoramic views from spots like Camino del Cielo are also a major draw, along with the opportunity to observe climbers and bird colonies.
Yes, the village of Agüero, at the foot of the Mallos, boasts significant historical sites. You can visit the Romanesque Church of El Salvador and the 12th-century Church of Santiago, which has been declared a National Monument and is considered one of Aragon's most beautiful Romanesque temples. Exploring the alleys of Agüero itself offers a glimpse into the region's rich heritage.
The hiking trails around Biel offer a range of difficulties. You can find moderate trails, such as 'Puy Fonguera and Ripas Altas from Biel', which is a circular route through the Sierra de Luesia. There are also more difficult options like 'Puy Moné and the Sierra de Luesia from las Pozas de Pígalo' or 'Ermita de Santo Domingo – Summit of Santo Domingo loop from Biel', which are longer and more challenging. Always check the specific route details for elevation and terrain before you go.
Yes, cycling is a great way to explore the area around Biel and its natural monuments. The Foz de Escalete, for example, is described as an amazing passage between rocks that can be explored by mountain bike, offering a very interesting way to connect to other sites. There are also numerous road cycling routes available in the wider region, as detailed in the Road Cycling Routes around Biel guide.
The rock formations around Biel are excellent for birdwatching, particularly for birds of prey. The Mallos de Agüero are known as an ideal place to observe colonies of birds of prey, including vultures and Egyptian vultures, which nest in this environment. Similarly, the ubiquitous vultures can be seen in the rock niches of Peñas de Riglos.
The Biel region is characterized by spectacular rock formations, primarily 'mallos'. These are reddish-colored, towering conglomerate formations, whose unique appearance is due to erosion. Examples include the magnificent Peñas de Riglos and the charming Mallos de Agüero. These geological wonders were formed by the accumulation of solid particles from the destruction of the Pyrenean reliefs, deposited by the Gállego river.


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