Grace Cathedral is an American cathedral of the Episcopal Church in San Francisco, California. On top of Nob Hill, Grace is the cathedral church of the Episcopal Diocese of California, led by Bishop Marc Andrus since 2006, while the cathedral's local parish has been led by Dean Malcolm Clemens Young since 2015.

Chartres Cathedral, also known as the Cathedral of Our Lady of Chartres, is a Catholic church in Chartres, France, about 80 km southwest of Paris, and is the seat of the Bishop of Chartres. Mostly constructed between 1194 and 1220, it stands on the site of at least five cathedrals that have occupied the site since the Diocese of Chartres was formed as an episcopal see in the 4th century. It is one of the best-known and most influential examples of High Gothic and Classic Gothic architecture, It stands on Romanesque basements, while its north spire is more recent (1507–1513) and is built in the more ornate Flamboyant style.