Santa María la Real of Nájera (mausoleum) built
1100 CE.
Shown on the map at 42.416°, -2.736°.
Santa María la Real is a monastery in the small town of Nájera in the La Rioja community, Spain. Originally a royal foundation, it was ceded by Alfonso VI to the Cluniac order. It was an important pilgrimage stop on the Camino de Santiago. It is particularly well known for the woodwork in the choir of the church.
Text from the Wikipedia article Santa María la Real of Nájera, licensed CC BY-SA 4.0.