Cathedral of Saint-Léonce
...that the 5th-century baptistery of the Cathedral of Saint-Léonce, one of France's oldest Christian structures, was concealed after reconstructions in the 13th century and re-discovered in 1925?
...that the 5th-century <a href="./Baptistery" id="mweQ" rel="mw:WikiLink" title="Baptistery">baptistery</a> of the <b id="mweg"><a href="./Fréjus_Cathedral" id="mwew" rel="mw:WikiLink" title="Fréjus Cathedral">Cathedral of Saint-Léonce</a></b>, one of <a href="./France" id="mwfA" rel="mw:WikiLink" title="France">France</a>'s oldest <a class="mw-redirect" href="./Christian_architecture" id="mwfQ" rel="mw:WikiLink" title="Christian architecture">Christian structures</a>, was concealed after reconstructions in the 13th century and re-discovered in 1925?