Step inside one of the world's largest mosaic collections — 83,000 square feet of shimmering Venetian glass — inside a Romanesque-Byzantine masterpiece that took over 75 years to complete.
What to expect
The approach through the cathedral's arched bronze doors is itself breathtaking, but nothing prepares visitors for the luminous interior where every surface from floor to soaring dome glitters with hand-cut glass tesserae. A knowledgeable docent narrates the theological and artistic narrative behind the mosaics, pausing at extraordinary details invisible to the casual eye. The adjoining Mosaic Museum provides rare behind-the-scenes context on the century-long creation. Allow 60–90 minutes.
Good to know
Guided tours run at set times; book ahead via the cathedral's website or call to arrange a small-group slot. Located in the Central West End, approx. 15 minutes by rideshare from the riverfront. Smart-casual attire appreciated.