23 cathedrals visited by J. David Markham
Berlin Cathedral
Cathedral of Our Lady
Cathedral of Santa Maria del Fiore
Cathedral of St. Michael and St. Gudula
Cathedral of Trier
Christ Church Cathedral
Helsinki Cathedral
Innsbruck Cathedral
Lisbon Cathedral
Marseille Cathedral
Milan Cathedral
Notre Dame de Paris
Notre-Dame Cathedral Basilica of Saigon
Oslo Cathedral
Porto Cathedral
Riga Cathedral
Saint Stephen Cathedral
Saint-Peters Basilica
Salzburg Cathedral
St Paul's Cathedral
St. Peter's Basilica
