This small building seems more like an oratory than a chapel. Originally, there were three ogival arches. With its elegant columns and beautifully shaped feet, it is one of the most interesting elements of Biot. It was unfortunately consolidated by a filling of the openings which changed its original appearance.
The date engraved on the facade, '1580 May 7 OPNBRA', is certainly that of a wish: St Roch and St Sebastian had, it was said, the power to protect against plague. Chapel St Roch existed already in 1557, according to a document on which it is mentioned near the gibbet.
At the beginning of the fifteenth century, while Biot was a deserted village, the Oratory of Hospitallers of St. John has been reported: perhaps it is the same monument. In 1624, an abandoned child was found in the chapel and was given the name of Jean-Paul Roch.
Sold to the clergy under the Revolution, the chapel was bought later by Lambert Geoffroy de Biot who sold it to Antoine Cavasse under the Directory. It was then given to the municipality of Biot.