150px|right|thumb|The castle of Hollenfels Hollenfels (; ) is a village in the commune of Helperknapp, in western Luxembourg. , the village has a population of 541.
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150px|right|thumb|The castle of Hollenfels Hollenfels (; ) is a village in the commune of Helperknapp, in western Luxembourg. , the village has a population of 541.
Hollenfels is famous for the huge keep of its imposing medieval castle overlooking the valley below.
2 mapped locations
via Wikidata sitelinks · CC0
via OpenStreetMap · GeoNames
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).