Doctor Zhivago filmed at Aldeadávila Dam, Aldeadávila de la Ribera. A huge concrete hydroelectric dam on a river on the Spain-Portugal border bookends the story. On screen it's Russian hydroelectric dam.
Probable Named in published production coverage; the coordinate is the place itself, checked against a gazetteer.
Planning the trip? The Spain travel atlas covers money, language and getting around
Venture keeps every scene location on one map, sorted by how far you'd have to walk. Open it in Aldeadávila de la Ribera and it tells you what was shot around you, how to get there, and whether you can actually go in.
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