Isolated in a meadow, the chapel of the Ortial of the thirteenth century. is dedicated to Our Lady. Mentioned for the first time in 1291 under the name of the Ortiei, then in the 18th century under that of the Ortias, or even the Otya in the current dialect, it was once surrounded by the buildings of the fief Simeon from which nothing is visible anymore. Its origin dates back to at least the middle of the 12th century, but the present building, entirely Gothic, dates from the end of the 13th century. Until 1937, the chapel served as a burial place for the family of Billy who owned it. The small bell tower at the arcade has been damaged by recent storms including the 1999 storm. Nevertheless, it has been able to be renovated as well as the chapel thanks to the energy of its owners and its conservation association.