Best natural monuments around Urdaibai are located within this UNESCO Biosphere Reserve in the Basque Country. The region features diverse natural landscapes, including dramatic coastlines, ancient caves, vibrant wetlands, and an estuary. These sites offer a range of geological features and ecological significance.
Last updated: May 14, 2026
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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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In 1982, artist Agustín Ibarrola began painting the pine trees in the forest near his homestead with the intention of using the landscape as a canvas to give continuity to his artistic expression. It is at this moment when he decides to break the law of perspective and transgress the three-dimensionality of a white line until it becomes two-dimensional. From then on, he explored the possibilities offered by the arrangement of the forest trees, playing with the different planes of depth and creating artistic sets composed of human figures, curves or straight lines, and circles of intense colors. The ideas and concepts that it develops become more complex and advances in various directions as the painted forest expands. With the help of two students from the Faculty of Fine Arts of the UPV/EHU, he carried out a large part of the work that was open to the public until 2018, at which time the biological cycle of the forest came to an end. Given the importance that the work had acquired, the Provincial Council of Bizkaia began the process of making the Forest last, for which it had from the first moment the support of the artist who had made clear his desire for the forest to survive. In this way and in order to preserve El Bosque de Oma, the Ibarrola work has been moved to a new location, also recovering original artistic ensembles lost due to felling, attacks and natural tree falls. Today we can enjoy El Bosque de Oma more complete and more faithful to the artist's original idea.
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The Forest of Oma is one of the best-known works of the Basque artist Agustín Ibarrola and is an expression of the artistic movement known as Art and Nature, which emerged in the late sixties of the 20th century and whose purpose is to convey artistic work to the natural environment, using the landscape as a framework, support and raw material for the artist. The work, located in the town of Kortezubi (Bizkaia), is made up of several sets of geometric motifs and figures painted on the trunk of radiata pine trees. The use of natural living supports, the play of two-three-dimensionality and the experience of placing the visitor at the center of the work of art through his discovery, as well as the diversity of responses it proposes, make this work a reference of the Art and Nature movement and of Basque Art in particular.
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This cape is the most prominent point in Euskadi, located very close to the famous hermitage of San Juan de Gaztelugatxe. If you bring binoculars, you can also occasionally spot cetaceans and seabirds. In addition, you will be able to see the current lighthouse as well as the old one, although only the tower remains of the old one.
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Gernikako Arbola is an oak tree in the Basque city of Gernika.
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Urdaibai offers several unique natural monuments. The Oma Forest, also known as the 'Painted Forest,' features tree trunks painted with human, animal, and geometric shapes, creating an open-air art gallery. Another distinctive site is Artzubi Bridge, a 16th-century Romanesque bridge that blends seamlessly with its natural surroundings and is part of the Camino de Santiago.
Yes, Urdaibai is home to several natural viewpoints. You can enjoy incredible panoramic vistas of the Urdaibai estuary from Views over the Urdaibai marsh, where the landscape dynamically changes with the tides. Additionally, the Matxitxako Lighthouse offers a 270° view of the coast, including distant views of San Juan de Gaztelugatxe on clear days.
For those interested in history, the Old Tree of Gernika (Gernikako Arbola) is a significant natural monument with deep cultural and historical roots in the Basque Country. Another historical site is the Santimamiñe Caves, which house ancient cave paintings from the Magdalenian period, offering a profound journey into prehistory.
Absolutely. Many natural monuments in Urdaibai are suitable for families. The Oma Forest provides a magical and thought-provoking experience for all ages. Laida Beach, with its fine sand and calm waters, is also ideal for families looking for water sports or relaxation. The Matxitxako Lighthouse is also considered family-friendly, offering scenic views.
The Urdaibai region is perfect for various outdoor activities. You can find numerous hiking trails, including easy loops like the 'Visitor center – Oma Forest loop from Ereño' or the 'Arteaga Castle – Urdaibai Bird Center loop.' For cycling enthusiasts, there are routes such as the 'Tour of Biscay: Urdaibai Coast Loop.' You can explore more options on the easy hikes around Urdaibai guide or the cycling around Urdaibai guide.
The Urdaibai Estuary (Marshes) is a critical stopover point for thousands of migratory birds and is a paradise for birdwatching. The Urdaibai Bird Center in Gautegiz Arteaga is an excellent place to observe diverse avian populations, including rare species like the osprey and Eurasian spoonbill.
Urdaibai boasts two exceptional wild beaches. Laga Beach, located at the foot of the imposing Peñón de Ogoño, is known for its dramatic cliffs and is ideal for surfing. Laida Beach, the largest in Urdaibai, offers nearly a kilometer of fine sand and calm waters, perfect for various water sports like windsurfing and paddleboarding.
Yes, the region is rich in geological wonders. San Juan de Gaztelugatxe is an iconic rocky islet featuring sea-carved arches, caves, and reefs, protected as a biotope in the Cantabrian Sea. The dramatic cliffs of Peñón de Ogoño also stand as a prominent massif offering spectacular views of the estuary and coastline.
Visitors frequently appreciate the blend of natural beauty and cultural significance. For instance, the Oma Forest is loved for its unique artistic interpretation of nature. The dynamic landscape of the Urdaibai marsh, changing with the tides, also captivates many, as does the historical charm of the Artzubi Bridge.
While popular sites like San Juan de Gaztelugatxe can be busy, you can find tranquility at places like the Hermitage of San Pedro de Atxarre. Located at over 300 meters, it offers spectacular panoramic views of the marshes and Izaro Island, combining historical significance with serene natural beauty, often with fewer crowds.
The best time to visit Urdaibai's natural monuments generally depends on your preferred activities. Spring and autumn offer pleasant temperatures for hiking and birdwatching, especially for migratory birds in the estuary. Summer is ideal for enjoying the beaches and water sports, though popular sites might be more crowded. Always check local conditions and specific site requirements, such as reservations for San Juan de Gaztelugatxe.


Extend your search for the best caves by checking out these guides of the top ones around Urdaibai: