The Royal Basilica of Our Lady of Atocha is one of the six basilica churches in Madrid. The buildings on the site have a long history. The original name refers to a lost icon from a chapel which was found during the time of the Reconquista. The old church was in disrepair and rebuilt in the 1890s in a Neo-Byzantine style designed by Fernando Arbós y Tremanti.
The church was destroyed during the Spanish Civil War and reconstruction completed in 1951.
Adjacent to the church is the Pantheon of Illustrious Men or Panteón de Hombres Ilustres of Madrid. It holds the remains of only a former president of the council of ministers, José Canalejas, however it also contains a number of interesting monuments from and just after the turn of the 19th century.
References:Saint-Georges de Boscherville Abbey is a former Benedictine abbey. It was founded in about 1113 by Guillaume de Tancarville on the site of an earlier establishment of secular canons and settled by monks from the Abbey of Saint-Evroul. The abbey church made of Caumont stone was erected from 1113 to 1140. The Norman builders aimed to have very well-lit naves and they did this by means of tall, large windows, initially made possible by a wooden ceiling, which prevented uplift, although this was replaced by a Gothic vault in the 13th century. The chapter room was built after the abbey church and dates from the last quarter of the 12th century.
The arrival of the Maurist monks in 1659, after the disasters of the Wars of Religion, helped to get the abbey back on a firmer spiritual, architectural and economic footing. They erected a large monastic building one wing of which fitted tightly around the chapter house (which was otherwise left as it was).