Monastery of San Millán de Yuso
La Rioja, cradle of excellent wines and of the Castilian language (commonly known as Spanish). They say that the first written piece of Spanish can be found in a codex of the year 1040, part of the Emilianense Glosses found in this Monastery, and where in one of the paragraphs there are notes of the commentator employing the new language used by the people, the ancient Castilian.
However, we had to wait three centuries before a monk of San Millán, named Gonzalo de Berceo, applied it to his literature.
The construction of the Yuso Monastery also known as El Escorial de La Rioja, started in 1053, even though there is nothing left of this Romanesque building. The new monastery you can see nowadays is of Herrerian style and dates back to the 16th century.