Lanleff’s temple is a pink sandstone ruin located in Lanleff, Brittany. It is a round church, reminiscent of the Church of the Holy Sepulchre in Jerusalem. The exact age of this building is unknown. The earliest known references to the building is from 1148 when the Lord of Châtelaudrien donated it to the Benedictine monastery of Saint Magloire de Léhon. Though scholars have debated the exact origins, it likely dates back to the early 11th century. Only a few parts of the church remain standing today: two out of three…