The Monastery of San Juan de Duero is a ruined, medieval monastery located in Soria, Spain. It belonged to the Knights Hospitaller.
The building has been protected since 1882 and is a Bien de Interés Cultural.
Wikipedia https://en.wikipedia.org/wiki/Monastery_of_San_Juan_de_Duero
Address 2D Carretera de Agreda, 42005, Spain
Coordinates 41°46'6.706" N -2°27'15.804" E