Gerês-Xurés Transboundary Biosphere Reserve

The Gerês-Xurés Transboundary Biosphere Reserve ranks among the largest protected areas of its kind in the European Union, spanning the border between northern Portugal and the Galician province of Ourense in Spain. UNESCO granted the site transboundary biosphere reserve status on 27 May 2009, recognizing the outstanding natural and cultural value of this mountainous frontier region.

Where exactly is the reserve located?

On the Spanish side, the reserve covers six municipalities southwest of Ourense: Lobios, Entrimo, Muiños, Lobeira, Calvos de Randín and Bande. On the Portuguese side, it borders directly onto Peneda-Gerês National Park, together forming a continuous ecological corridor that pays no attention to the political boundary running through it. The protected territory covers close to 268,000 hectares in total, making it one of the largest cross-border biosphere reserves on the continent.

What makes the natural environment so distinctive?

Rugged mountain terrain, a dense network of rivers and streams, and ecosystems that remain in generally good conservation condition together support numerous species of fauna and flora of significant importance for European biodiversity. A key factor is the reserve's position at the crossroads of three climatic influences — Atlantic, Mediterranean and continental. Their overlap, combined with sharp changes in altitude and varying slope exposure, produces a striking number of local microclimates. This climatic mosaic explains why such a relatively compact area hosts such a wide variety of habitats, from damp river valleys to exposed, wind-swept mountain ridges.

What can visitors do in the reserve?

The area is developed for tourism in a way that keeps close contact with nature while respecting conservation rules. Visitors can follow a network of hiking trails running through forests, river valleys and mountain terrain, and have opportunities to observe wildlife in its natural habitat. The reserve also draws people interested in the cultural heritage of the borderland — villages, traditional farming practices and centuries of settlement history that developed independently on each side of the frontier yet still share many common traits.

Is it worth combining a visit with Peneda-Gerês National Park?

Yes — the direct adjacency to the Portuguese national park means the two protected areas naturally complement each other. Travelers planning a longer stay in the region can easily combine a visit to the Spanish side of the reserve with an excursion into Peneda-Gerês, taking advantage of shared tourist infrastructure and a similar landscape character built around granite massifs, oak woodlands and heathland.

Frequently asked questions

When was the reserve established? It received UNESCO transboundary biosphere reserve status on 27 May 2009.

How large is the protected area? The reserve covers roughly 268,000 hectares spanning both sides of the Portugal-Spain border.

Which Spanish municipalities belong to the reserve? Lobios, Entrimo, Muiños, Lobeira, Calvos de Randín and Bande, all located in the province of Ourense in Galicia.

What sets this reserve apart from other protected areas? The combination of three overlapping climatic influences, mountainous terrain, and its transboundary status, which allows conservation to treat the ecosystem as a single whole regardless of the national border running through it.

Is the reserve suitable for a longer trip? Yes — thanks to its proximity to Peneda-Gerês National Park and a well-developed trail network, the region works well for both day trips and multi-day hiking excursions.