Almendralejo
... that a dam at Almendralejo in Spain was the first hydropower dam to contain a water wheel within its actual structure?
... that a dam at <b id="mwBiw"><a href="./Almendralejo" id="mwBi0" rel="mw:WikiLink" title="Almendralejo">Almendralejo</a></b> in Spain was the first hydropower dam to contain a water wheel within its actual structure?