18 cathedrals visited by Shirah
Barcelona Cathedral
Cathedral of Santa Maria del Fiore
Karlskirche
Kazan Cathedral
Lisbon Cathedral
Mezquita
Notre Dame de Paris
Pisa Cathedral
Saint Isaac Cathedral
Saint Stephen Cathedral
Saint Vitus Cathedral
Saint-Peters Basilica
Saints Peter and Paul Cathedral
Smolny cathedral
St Paul's Cathedral
St. Peter's Basilica
