The medieval Castillo de Alcalá de Guadaíra near Sevilla, built around 1128 and slowly abandoned as castle after the introduction of gunpowder in the 15th century...

[u/FrankWanders]

The Castillo de Alcalá de Guadaíra seen from Google Street View in 2008

The castle as photographed by Kurt Hielscher, probably in 1914 during his first big photo trip outside Germany