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Real Sitio de San Ildefonso-El Espinar Biosphere Reserve

  • Montes de Valsaín. Real Sitio de San Ildefonso-El Espinar Biosphere Reserve, Segovia. © Turismo Real Sitio de San Ildefonso

    Montes de Valsaín. Real Sitio de San Ildefonso-El Espinar Biosphere Reserve, Segovia. © Turismo Real Sitio de San Ildefonso



35.414 hectares
Carretera CL-601, kilómetro 127,5.
40109 Valsaín, San Ildefonso
Segovia, Castile-Leon

Telephone+34 921120013


It is located in the Sierra de Guadarrama mountains in Segovia (Castile-León) and is the site of the Valsaín mountain, one of the largest wooded areas in Spain. The area has great ecological value and is the site of several forestry research centres.

Practical information

Recreational area
Viewing point


Information for visits

Montes de Valsaín has a visitor centre located in the recreational area of Boca del Asno (CL-601 road, kilometre 127.5). You'll also find various trails, as well as a self-guided route for which you can pick up the brochure in the centre or download through the 'Useful links' section of this website. There are two other recreational areas in the Montes de Valsaín: Los Asientos and El Robledo.

Environmental information

The area is home to a wide variety of flora. For example, on the highest part of the mountain there is an abundance of grasslands and low scrub. In the middle and lower parts you'll find forests of wild pine, oak, holm oak, and typical riverbank vegetation.

The fauna in this area includes such emblematic and endangered species as the Iberian imperial eagle, the black stork and the black vulture. Otters are among the mammals to be seen here, and there are trout in the streams.

Cultural information

It is well worth a visit to San Ildefonso to see the Royal Palace of La Granja de San Ildefonso and its gardens. Visitors will also enjoy the Glass Museum, housed in what was formerly the Royal Glass Factory of La Granja, with a long-standing tradition and international fame. What's more, a little over 10 kilometres away you'll find the World Heritage City of Segovia, with its imposing aqueduct and Alcázar fortress.

Visitor centre
Boca del Asno Visitor Centre
Address: Carretera CL-601, kilómetro 127,5.
Telephone: +34 921120013


Find tourist information in the surroundings

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