Best natural monuments in Biscay showcase a diverse landscape, from dramatic coastlines to expansive natural parks. These sites are recognized for their unique geological formations and rich biodiversity. The region offers a variety of outdoor experiences, including mountains, beaches, and protected reserves. Many locations also hold cultural significance within the Spanish Basque Country.
Last updated: May 29, 2026
Highlight (Segment) • Historical Site
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Highlight • Beach
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Highlight • Bridge
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Highlight • Natural Monument
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Highlight • Forest
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Highlight • Religious Site
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Highlight • Castle
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Popular around Biscay
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The short hike up to the chapel is very worthwhile. It is quite strenuous, but the views of the coast make up for it. A great place that you should definitely see.
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The castle is gigantic and beautiful to look at, unfortunately it has been surrounded by a construction fence for ages. Unfortunately, you can't see much. Whether the detour is worth it, everyone has to decide for themselves.
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Definitely a highlight, but unfortunately, the castle was covered in scaffolding when I visited. The castle dates back to the Middle Ages but was later almost completely rebuilt.
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A beautiful vantage point. If the season is right, there's also the opportunity to watch whales. The path further to Gaztelugatxe, however, requires pushing because it's very overgrown. We didn't go far, but turned around and drove back along the road.
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From the lighthouse you have a 270° view on the coast, very clear on st juan de Gaztelugatxe, perfect spot for some scenic pictures!
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The Oma Forest - Omako basoa in Basque - is also known as the painted forest, the enchanted forest or even the Ibarrola Forest. Its most common name - Oma Forest - refers to the district in which it is located, which belongs to the municipality of Kortezubi. This original work of art was created between 1982 and 1985, when the Basque painter and sculptor Agustín Ibarrola used the trunks of trees as a kind of canvas for a total of 47 images. On them he painted animals, geometric figures and people, or just parts of them, such as eyes and lips. In addition, many of the compositions do not consist of a single tree, but must be viewed in the context of several tree trunks. To do this, you must pay attention to the signs on the ground that tell the viewer where to stand in order to enjoy the whole image.
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When the Condor attacked, the residents of Guernica tried to protect the tree with their bodies because it is sacred to the Basques. Even today, elected politicians have to swear their loyalty to the Basque Country at an oak tree that stands a few meters away.
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Biscay offers a variety of stunning natural monuments. Among the most popular is Saint John of Gaztelugatxe, an extraordinary islet with a hermitage reached by 241 steps, famous for its views and historical significance. Another beloved spot is La Arena Beach, known for its expansive sandbank and popularity for surfing. For mountain enthusiasts, Anboto (1,331 m) is a prominent summit with cultural importance in Basque mythology.
Yes, several natural monuments in Biscay are family-friendly. The Oma Forest, located within the Urdaibai Biosphere Reserve, is a unique and enchanting experience with trees painted by artist Agustín Ibarrola, creating a magical atmosphere for all ages. Views over the Urdaibai marsh also offer accessible and beautiful scenery for families.
Biscay's natural monuments showcase diverse geological formations. You can explore dramatic coastal features at places like Saint John of Gaztelugatxe, or the expansive sandbanks of La Arena Beach. Inland, areas like Urkiola Natural Park and Gorbeia Natural Park are characterized by steep limestone mountains and significant karst formations, including numerous caves and chasms. Armañón Natural Park is particularly renowned for its impressive karst landscapes and the Pozalagua Cave, which boasts an exceptional number of eccentric stalactites.
Many natural monuments in Biscay are excellent starting points for outdoor activities. You can find numerous hiking opportunities, such as the 'San Juan de Gaztelugatxe and its viewpoints' trail or the 'Anboto Loop Trail'. For cycling enthusiasts, routes like 'Altos de Urkiola y Muniketa — circular by the Urkiola Natural Park' offer challenging rides. You can explore more options for hiking and road cycling in Biscay.
Absolutely. Saint John of Gaztelugatxe is not only a natural wonder but also a historical site with a hermitage dating back centuries and a local tradition of ringing its bell. The Old Tree of Gernika (Gernikako Arbola) is a powerful symbol of Basque liberties. Additionally, Anboto (1,331 m) holds significance in traditional Basque culture as the main dwelling of the goddess Mari.
The best time to visit Biscay's natural monuments generally depends on the activity. Spring and autumn offer pleasant temperatures for hiking and exploring natural parks like Urkiola and Gorbeia, with lush landscapes and fewer crowds. Summer is ideal for coastal areas and beaches like La Arena Beach, though popular sites can be busy. Winter can be beautiful for mountain scenery, but some higher trails may be challenging due to snow or wet conditions.
Yes, the Urdaibai Biosphere Reserve, which encompasses sites like the Oma Forest and offers views over the Urdaibai marsh, was designated a UNESCO Heritage site in 1984. It is recognized for its unique marshes, high biodiversity, and its crucial role for migratory birds.
Yes, there are several easy walking trails available. For instance, the 'Saldropo Wetland Loop' in Gorbeia Natural Park offers a gentle walk through an ecologically significant wetland. You can also find easy routes like the 'Bilbao City Highlights Trail' which, while urban, connects to natural elements. More easy hikes can be found in the Easy hikes in Biscay guide.
For unique landscapes, visit the Oma Forest with its painted trees. In Gorbeia Natural Park, the Itxina Protected Biotope features labyrinthine caves and chasms, and the 'Ojo de Atxular' offers exceptional panoramic views through a hole in the rocks. Armañón Natural Park is home to the Pozalagua Cave, famous for its eccentric stalactites.
Yes, the Urdaibai Biosphere Reserve is an excellent location for birdwatching. As a UNESCO site, it's a crucial route for migratory birds and features a Bird Observation Center, making it ideal for observing numerous species that pass through its unique marshes and river valleys.
To visit Saint John of Gaztelugatxe, it's highly recommended to get free tickets online in advance, especially due to its popularity after being featured in 'Game of Thrones'. The ascent to the hermitage involves 241 steps, which can be arduous but offers unforgettable views of the wild Cantabrian coast. The hermitage itself is often locked, but the experience and views are well worth the effort.
Urkiola Natural Park is deeply steeped in local legends and myths, particularly those associated with Mari, the queen of all genies in Basque mythology, who is said to reside in its caves. The park also hosts the Shrine of San Antonio Abad and San Antonio de Padua, making it a site of religious pilgrimage. Gorbeia Natural Park, centered around Mount Gorbeia, features a prominent cross at its summit, a symbol for Christians.


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