Landscapes & nature
Valmayor Reservoir
Wikipedia names Valmayor Reservoir as where 1 film or series was filmed; its page links to the sentence that says so. Wikidata records no shoot here yet.

Filmed here, per Wikipedia
Wikipedia says these were filmed in Valmayor Reservoir. Each title’s page links to the sentence that says so.
Filming locations nearby
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Landscapes & nature
La Granjilla de La Fresneda de El Escorial
Spain · 7 km north-west
Cultural property in El Escorial, Spain
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Towns & cities
El Escorial
Spain · 8 km north-west
Municipality in the Autonomous Community of Madrid
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Towns & cities
San Lorenzo de El Escorial
Spain · 10 km north-west
Municipality of Spain
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Towns & cities
Royal Monastery of San Lorenzo de El Escorial
Spain · 10 km north-west
Monastery and historical residence of the King of Spain
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Towns & cities
Torrelodones
Spain · 11 km north-east
Municipality of Spain
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Towns & cities Las Matas
Spain · 13 km east
Neighborhood of municipality Las Rozas de Madrid, located in the northern part of the municipality