St. Mark's Basilica (Basilica di San Marco)
The cathedral itself. Byzantine mosaics, the Pala d'Oro altarpiece, the Treasury, the upper loggia. Not part of the civic museums system.
- Entry to the church itself is free, but a queue is unavoidable — skip-the-line tickets cost €3–8.
- Pala d'Oro (the gold-and-jewel altarpiece) is a paid upgrade, ~€5.
- Loggia dei Cavalli (the bronze horses + St. Mark's Square balcony) is a separate paid ticket, ~€8.