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Heritage classified

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Origin and history

The Church of the Three Twins, located in Saints-Geosmes in Haute-Marne, is a religious building whose history dates back to at least the fifth century. According to tradition, it was built to house the relics of three martyrs (the twin saints) from Cappadocia. A 5th century oratory and a 8th century basilica previously occupied the site, which later became a certified abbey around 830, transformed into a priory until the 18th century.

The crypt, partially obstructed during the Revolution, dates back to the 11th century, although some elements suggest an older origin (VIth-VIIth centuries). It served as a place for burial and veneration of relics, with 38 columns of which 27 remain today. Stunned in the 19th century and opened in the 1980s, it was classified as a historical monument in 1892, followed by the rest of the church in 1909.

The present church, built in the 12th century in a Latin cross plan, was redesigned at the end of the 18th century with a new facade and a bell tower. Its furniture includes notable elements such as a 13th century reliquary, classified statues (14th-17th centuries), and funeral slabs of priors. The crypt, abandoned in the 12th century, bears witness to successive construction campaigns with its non-orthogonal walls.

The site, owned by the commune, remains a notable example of medieval Christian architecture in Champagne-Ardenne. Its history combines worship of relics, monastic life, and architectural transformations linked to the religious and political evolutions of the region.

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