Constantine the Great commissioned the Eleona basilica in the early 4th century on the Mount of Olives, and the article says his mother Helena directed it. A Crusader church followed in 1152, and Saladin's siege of 1187 heavily damaged it. In 1851 the remaining stones were sold for tombstones.
Aurelia de Bossi founded the modern church and convent. The cloister dates to 1868 and the Carmelite convent to 1872. The infobox names Viollet-le-Duc and André Lecomte du Nouÿ for the church and Marcel Favier for the rebuilt Eleona. The article calls the style Romanesque Revival. Reconstruction of the Byzantine church began in 1915 and stopped in 1927 when funds ran out, so it remains unfinished.
It is a cloistered Carmelite convent, and plaques inside carry the Lord's Prayer in over 100 languages. France administers the land.

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