Holy chamber of Oviedo - Credit: Wikimedia Commons
The Holy chamber of Oviedo (, also known as the chapel of St. Michael) is a Roman Catholic pre-Romanesque church in Oviedo, Spain, built next to pre-romanesque Tower of San Miguel of the city's cathedral. Nowadays, the church occupies the angle between the south arm of the cathedral transept and a side of the cloister. Read more on Wikipedia
Source: en.wikipedia.org