Best natural monuments in Asturias include a diverse range of protected sites, from dramatic coastlines and towering mountains to ancient forests and unique geological formations. This region in northern Spain features numerous natural monuments, recognized for their ecological significance and distinct features. These areas offer varied landscapes for outdoor exploration, showcasing Asturias's commitment to preserving its natural heritage. The guide highlights 20 such locations, providing details for planning outdoor adventures.
Last updated: April 28, 2026
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Popular around Asturias
Route of the Reconquest (GR 202) – In the footsteps of an army
Camino del Norte – 15 stages
Camino del Norte (in reverse) – Discovering northern Spain's stunning coastline
Central Mountain Cycling Ring GR 208 - Tour of the Asturian Mountains
Senda del Arcediano (GR 210) - A historical hike through the Picos del Picos
Great mountain passes of Picos de Europa on road bikes
Legendary climbs - Ports of La Vuelta a España
Route of the Palaces — GR 200
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The Cabo Peñas Lighthouse is located on the most prominent plateau of Cabo Peñas, 100 meters above sea level and about 60 meters from the cliff. In operation since 1852, it was electrified in 1946. In 1951, a siren was installed that emits the letter "P" in Morse code, which was replaced in 1977. In 1956, a radio beacon was installed, transmitting in Morse code PS, and in 2003 a DGPS station was added. It emits three white flashes every 15 seconds, with a range of 21 nautical miles.
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The Cabo Peñas Lighthouse is located on the most prominent plateau of Cabo Peñas, 100 meters above sea level and about 60 meters from the cliff. In operation since 1852, it was electrified in 1946. In 1951, a siren was installed that emits the letter "P" in Morse code, which was replaced in 1977. In 1956, a radio beacon was installed, transmitting in Morse code PS, and in 2003 a DGPS station was added. It emits three white flashes every 15 seconds, with a range of 21 nautical miles.
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The Cabo Peñas Lighthouse is located on the most prominent plateau of Cabo Peñas, 100 meters above sea level and about 60 meters from the cliff. In operation since 1852, it was electrified in 1946. In 1951, a siren was installed that emits the letter "P" in Morse code, which was replaced in 1977. In 1956, a radio beacon was installed, transmitting in Morse code PS, and in 2003 a DGPS station was added. It emits three white flashes every 15 seconds, with a range of 21 nautical miles.
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Wonderful location in the Picos de Europa
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One of many impressive rock formations.
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A fantastic swimming spot in the VERY cold Cares River. Highly recommended, especially after a hike!
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At high tide, fountains spray from the ground
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Asturias offers a diverse range of natural monuments, from dramatic coastlines and towering mountains to ancient forests and unique geological formations. You can find impressive gorges like the Cares Gorge, spectacular seawater geysers such as the Arenillas Blowholes, and serene lakes like Lake Ercina within the Picos de Europa National Park.
Yes, many natural monuments in Asturias are suitable for families. Lake Ercina in the Picos de Europa National Park is a popular choice with scenic beauty and hiking trails. The Desfiladero de Peñas Juntas on the Senda del Oso offers a cycling route along an old mining train path, which is also great for families. Coastal areas like Cabo Peñas Lighthouse provide accessible viewpoints with stunning ocean vistas.
Asturias is home to several unique geological formations. The Arenillas Blowholes are a must-see, where ocean pressure forces water through limestone cliffs, creating spectacular jets up to 40 meters high. The Cares Gorge, also known as 'Garganta Divina', features a trail carved into limestone cliffs surrounded by nearly 2,000-meter-high mountains. The region also boasts extensive dune systems at Playa del Espartal and Playón de Bayas.
The Muniellos Forest is an ancient and mythological oak forest, approximately 500 million years old, covering over 2,000 hectares. It's highly valued for its semi-virgin state and rich biodiversity. Due to its ecological sensitivity, access is restricted to only 20 people per day, requiring prior authorization. Somiedo Natural Park, a Biosphere Reserve, also offers pristine nature with impressive lakes and traditional 'brañas' (thatched-roof cabins).
Yes, the Picos de Europa National Park features diverse natural areas including rivers and waterfalls. For dedicated waterfall experiences, you can explore routes like the Villamayor - El Chorrón - La Cueva Trail or the Oneta Waterfalls loop from Oneta. You can find more details on these and other waterfall hikes in the Waterfall hikes in Asturias guide.
The natural monuments in Asturias are excellent starting points for various outdoor activities. You can enjoy cycling on routes like the Lagos de Covadonga Trail or the Luanco - Cabo Peñas Cyclotourist Loop, detailed in the Cycling in Asturias guide. For hikers, there are mountain trails such as those around Bulnes Village or Peña Ubiña, which you can explore in the Mountain Hikes in Asturias guide.
The best time to visit largely depends on the type of experience you seek. Spring offers lush greenery and fewer crowds, especially around places like Lake Ercina. Summer is popular for coastal areas and higher mountain trails, though some popular spots like the Covadonga Lakes may have car access limitations due to high visitor numbers. Autumn brings beautiful fall colors to the forests, while winter can offer unique snowy landscapes in the mountains, though access might be more challenging.
Absolutely. The Queen's Viewpoint provides expansive vistas. The Cabo Peñas Lighthouse, situated on a prominent plateau, offers dramatic coastal views 100 meters above sea level. The Cares Gorge also provides breathtaking views as you traverse the trail carved into the mountainside.
While popular sites can get busy, some natural monuments offer a more tranquil experience. The Muniellos Forest, for example, has restricted access to preserve its ecosystem, ensuring a less crowded visit if you secure a permit. Somiedo Natural Park, though a Biosphere Reserve, is known for its pristine and untouched natural environment, offering a sense of solitude away from the more frequented tourist spots.
Asturias is rich in biodiversity. In areas like Somiedo Natural Park, you might spot brown bears, wolves, and various bird species. The Picos de Europa National Park is home to chamois, deer, and a wide array of raptors. Coastal areas, particularly around La Deva Island near Playón de Bayas, are crucial enclaves for numerous bird species. The ancient Muniellos Forest also supports a rich diversity of flora and fauna.
Asturias is renowned for its gorges. The Ruta del Cares, particularly the first 6 kilometers from Cain, offers spectacular views within a rocky gap over 2,000 meters deep. Another popular option is the Desfiladero de las Xanas, a singular and beautiful geological formation with a scenic route winding through hazel, ash, linden, and maple trees.
Visitors frequently highlight the spectacular views and the immersive natural experience. The Ruta del Cares is praised for its 'nature in its full splendor'. The Arenillas Blowholes are described as an 'impressive natural spectacle' with sounds like a 'breathing dragon'. The overall diversity, from mountain lakes to dramatic coastlines, is also a major draw.


Find even more amazing natural monuments in Asturias by checking out the top Highlights region by region:
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