28 cathedrals visited by Patrick Horisberger

Almudena cathedral

Bamberger Dom

Barcelona Cathedral

Basilica de San Francisco el Grande

Berlin Cathedral

Cologne Cathedral

Duomo di Verona

Frankfurt Cathedral

Grossmünster

Helsinki Cathedral

Karlskirche

Kazan Cathedral

Lisbon Cathedral

Milan Cathedral

Notre Dame de Paris

Saint Isaac Cathedral

Saint Stephen Cathedral

Saint-Peters Basilica

Saints Peter and Paul Cathedral

Salzburg Cathedral

Smolny cathedral

St Paul's Cathedral

St. Florian's Cathedral

St. John's Archcathedral

St. Patrick's Cathedral

St. Peter's Basilica

St. Salvator's Cathedral

Uspenski Cathedral