Royaumont Abbey is a former Cistercian abbey built between 1228 and 1235 with the support of Louis IX. Several members of the French Royal family were buried here (instead of Saint Denis Basilica), for example, three children and two grandchildren of Louis IX.
The abbey was dissolved in 1791 during the French Revolution and the stones were partly used to build a factory. However, the sacristy, cloister, and refectory remained intact.
In 1836 and 1838, respectively, two operas by German composer Friedrich von Flotow opened at Royaumont—Sérafine and Le Comte de Saint-Mégrin.
In the early 20th century, the abbey was bought by the Goüin family who in 1964 created the Royaumont Foundation, the first private French cultural foundation. Today, the abbey is a tourist attraction and also serves as a cultural centre.
From January 1915 to March 1919 the Abbey was turned into a voluntary hospital, operated by Scottish Women's Hospitals, under the direction of the French Red Cross. It was especially noted for its performance treating soldiers involved in the Battle of the Somme.
References:The Basilica of Santa Maria in Trastevere is one of the oldest churches of Rome. The basic floor plan and wall structure of the church date back to the 340s, and much of the structure to 1140-43. The first sanctuary was built in 221 and 227 by Pope Callixtus I and later completed by Pope Julius I.
The inscription on the episcopal throne states that this is the first church in Rome dedicated to Mary, mother of Jesus, although some claim that privilege belongs to the Basilica di Santa Maria Maggiore. A Christian house-church was founded here about 220 by Pope Saint Callixtus I (217-222) on the site of the Taberna meritoria, a refuge for retired soldiers. The area was made available for Christian use by Emperor Alexander Severus when he settled a dispute between the Christians and tavern-keepers.
The church underwent two restorations in the fifth and eighth centuries and in 1140-43 it was re-erected on its old foundations under Pope Innocent II.