Best natural monuments around Mundaca are found within the Urdaibai Biosphere Reserve, a UNESCO-designated area in the Basque Country. This coastal region is characterized by its diverse ecosystems, including marshes, cliffs, and forests, shaped by the Cantabrian Sea and the Oka River estuary. The landscape offers a blend of historical sites and natural formations, providing varied opportunities for exploration. Visitors can experience both cultural heritage and significant natural beauty in this area.
Last updated: July 1, 2026
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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 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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Water is appreciated during the climb.
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Due to the number of tourists who wish to visit San Juan de Gaztelugatxe, it is no longer freely accessible to the beginning of the stairs leading up to the hermitage. Now it is necessary to reserve access (free), go through a turnstile and make a steep descent until you reach the base of the hermitage stairs.
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A beautiful view. You have to do it at least once in your life.
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Beyond the well-known sites, you can explore the Oma Forest, a unique outdoor art installation where artist Agustín Ibarrola painted trees. Another distinctive spot is the Views over the Urdaibai marsh, offering a dynamic landscape that changes with the tides, showcasing a blend of natural processes and historical human practices.
Yes, several natural monuments around Mundaca also hold historical importance. Saint John of Gaztelugatxe is a prime example, featuring a hermitage that has stood on the islet since the 10th century. The Old Tree of Gernika (Gernikako Arbola) is another significant site, a symbolic oak tree deeply rooted in Basque history and culture.
For breathtaking views of the Urdaibai Biosphere Reserve, visit the Views over the Urdaibai marsh, where you can observe the expansive wetlands. Another excellent spot is the Matxitxako Lighthouse, which offers a 270° panoramic view of the Cantabrian coast, and on clear days, you might even see the French coast.
Absolutely! The Oma Forest is a fantastic family-friendly option, offering an engaging artistic experience among painted trees. The Views over the Urdaibai marsh and the Matxitxako Lighthouse are also suitable for families, providing accessible viewpoints and opportunities for nature observation. The Old Tree of Gernika (Gernikako Arbola) offers a historical and cultural experience that can be enjoyed by all ages.
The area around Mundaca, within the Urdaibai Biosphere Reserve, offers diverse outdoor activities. You can find numerous hiking trails, such as the 'Katillotxu: A Look into the Megalithic Past Trail' or the 'Santa Catalina Peninsula – Charming harbor viewpoint loop'. For running enthusiasts, there are routes like the 'Running loop from Mundaka'. Cycling is also popular, with options like 'Mundaka – circular via Bermeo, Busturia and the Island of Chacharramendi'. You can explore more routes in the Hiking around Mundaca, Running Trails around Mundaca, and Cycling around Mundaca guides.
Yes, the ascent to Saint John of Gaztelugatxe is considered quite challenging, involving 241 steps to reach the hermitage. While arduous, the views of the wild Cantabrian coast from the top are well worth the effort. Some of the nearby hiking and cycling routes also feature moderate to difficult sections, offering a good challenge for experienced adventurers.
Yes, to access Saint John of Gaztelugatxe, it is necessary to obtain free tickets in advance. This helps manage visitor numbers and preserve the site. For other natural monuments like the Oma Forest or the Urdaibai marsh viewpoints, general access is usually free, but it's always good to check for any local regulations or temporary restrictions.
The Urdaibai Biosphere Reserve, including its natural monuments, is beautiful year-round. Spring and autumn offer pleasant temperatures for exploring and fewer crowds. Summer is popular, especially for coastal areas. For sites like the Urdaibai marsh, visiting during different tides can offer varied perspectives of the dynamic landscape. Always check weather conditions before your visit.
The Urdaibai Biosphere Reserve is a haven for diverse wildlife, particularly birds. The marshlands are a crucial stopover for migratory birds, making it an excellent spot for birdwatching. The Matxitxako Lighthouse area is also known for seabird and cetacean observation, especially during migration seasons. The forests and coastal areas support a variety of local flora and fauna.
The duration of your visit depends on the specific monument and your interests. For a site like Saint John of Gaztelugatxe, allow at least 2-3 hours for the ascent, exploration, and descent. The Oma Forest can take 1-2 hours to fully appreciate the art. Viewpoints like the Urdaibai marsh or Matxitxako Lighthouse can be shorter stops, or extended if you combine them with a walk or picnic. To experience multiple sites, consider dedicating a full day or more.
Visitors frequently praise the stunning natural beauty and the unique blend of nature with cultural and historical elements. The challenging yet rewarding climb to Saint John of Gaztelugatxe with its incredible coastal views is a highlight for many. The artistic experience of the Oma Forest and the serene, ever-changing landscape of the Urdaibai marsh are also highly appreciated. The region's diverse ecosystems and opportunities for outdoor activities consistently receive positive feedback.
Yes, there are several easy options. The Oma Forest offers relatively gentle paths for exploring the painted trees. The Views over the Urdaibai marsh are accessible from viewpoints along the road, providing easy access to the scenic landscape. The area around the Old Tree of Gernika (Gernikako Arbola) is also suitable for an easy stroll, focusing on its historical significance.


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