The best time to visit the Basque Coast Geopark is from spring to autumn, when the climate is milder and the sea conditions are generally more favorable. This allows for safe and comfortable hiking and, especially, boat trips to observe the flysch, the Geopark's star experience.

In spring, the contrast between the intense green of the coastal countryside and the cliffs is at its most spectacular, while summer offers excellent conditions for enjoying the coastline and the activities organized by the Geopark.

Autumn, for its part, brings a special light for landscape photography and fewer visitors, allowing for a more peaceful enjoyment of the natural and cultural resources of this unique space.

The Basque Coast Geopark is an ideal destination for discovering the Earth's history through its landscape. Its trails allow visitors to observe the famous flysch of the Basque Coast both on foot and by boat, with interpreted routes that show the spectacular succession of rock layers between Zumaia, Deba, and Mutriku. There are also points of special geological interest, such as the Elorriaga viewpoint, Itzurun beach, Saturrarán (where the black flysch emerges and whose viewpoint is dedicated to understanding the great underwater canyons at the source of the Bay of Biscay), and the Mendatagaina viewpoint, from which the complexity of the Basque coastline can be appreciated.

The Geopark's interior surprises with karst landscapes such as the Olatz polje or the closed Lastur valley, ideal for combining nature and tranquility. The cultural heritage is complemented by visits to the Ekain Cave, famous for its Paleolithic horse paintings. The coastal towns of Mutriku and Zumaia retain their maritime charm and are perfect for walks with a local flavor. Among the most notable resources, the Nautilus Museum in Mutriku offers a valuable collection of fossils that helps understand the marine geological history of the area. Throughout the year, the Geopark organizes a varied program of interpreted routes, workshops, and geological outreach activities. In addition, Geopark partner companies offer guided boat trips and geological interpretation routes for all audiences.

• Protected Natural Landscape of the Deba-Zumaia coastal section
• SAC of the Urola estuary
• Arno Mountain SAC
• Izarraitz ZEC
• Other natural areas: Mount Andutz, Beba River estuary, Mutriku-Saturraran Cliffs

The Geopark's coastline features an almost continuous, fairly monotonous, rectilinear cliff. It is not a particularly spectacular or striking stretch of coast, although it is one of the best-preserved coastal sections in the Basque Country. The interest of the Geopark and its flysch is not so much visual or scenic as interpretive, hence the importance of guided tours in this area, as they are the ones that open the visitor's eyes. What is unusual and what makes this stretch of coast special is the existence of a continuous record of sedimentary rocks spanning that 60-million-year period during the transition from the Mesozoic to the Cenozoic.

Further inland, the karst valley of Olatz, with its landscape of sinkholes and countryside dotted with farmhouses, offers a different view of the Geopark. Also worth a visit is the Virgen de Itziar viewpoint, on the road between Zumaia and Deba, which offers sweeping views of the coast. In Mutriku, a town with a historic whaling past, the Nautilus Museum provides an insight into the marine geology of the area through a valuable collection of fossils. Also in Mutriku is the Mutriku olatu Plant, a world leader in sustainability, where clean energy is generated from waves. The Deba estuary can be explored on foot along the riverside path that runs along the beginning of the estuary. It is also the starting point of the Prehistory Route, a novel Geopark initiative that links geological evolution with human occupation. Throughout the tour, changes in the landscape over the last 10.000 years are interpreted, highlighting the connection between the sedimentary record, prehistoric settlements, and the inhabited caves in the area.