Altar and altar piece in <a href="//commons.wikimedia.org/wiki/Saint_Peter" class="mw-redirect" title="Saint Peter">Saint Peter</a>'s church of Tabira, Durango, Biscay, Spain. The verse "<i>Super hanc petram aedificabo ecclesiam meam</i>" ("on this stone I'll build my church") is carved on the altar.
<a href="//commons.wikimedia.org/wiki/User:Javierme" title="User:Javierme">Javier Mediavilla Ezquibela</a>
CC BY 2.5
<span class="int-own-work">Self-photographed</span>