21 cathedrals visited by A. Umit Iris

Barcelona Cathedral

Berlin Cathedral

Cathedral of Santa Maria del Fiore

Cathedral of St. Michael and St. Gudula

Frankfurt Cathedral

Grossmünster

Karlskirche

Lisbon Cathedral

Milan Cathedral

Munich Frauenkirche

Notre Dame de Paris

Notre-Dame de Nice

Saint Stephen Cathedral

Saint Vitus Cathedral

Saint-Peters Basilica

Salzburg Cathedral

St Mark's Basilica

St Paul's Cathedral

St. George's Cathedral

St. Patrick's Cathedral

St. Peter's Basilica