There are 32 churches in this sestiere; most of them are Catholic but there are also an Evangelical Lutheran church and five synagogues.
So many great ones here, including the most beautiful Gothic church in town (Madonna dell’Orto), the most beautiful small church in the world (Santa Maria dei Miracoli), and the most crazy over-the-top Baroque church in the universe (Gesuiti).
There are Tintorettos galore in this sestiere (his Saint Agnes altarpiece from Madonna dell’Orto is on the left) as well as the second most famous relic in Venice (the body of Saint Lucy in San Geremia).
Chorus Pass churches in this sestiere are San Giobbe, Miracoli, and Sant’Alvise.
Churches in Cannaregio
Gesuiti (Santa Maria Assunta)
Miracoli (Santa Maria dei Miracoli)
San Geremia (Santi Geremia e Lucia)
San Giovanni Grisostomo (San Giovanni Crisostomo)
San Marcuola (Santi Ermagora e Fortunato)
San Michele in Isola
Santa Maria dei Penitenti (Le Penitenti)
Santa Maria dei Redentore (Chiesa delle Cappuchine)
Santa Maria Maddalena (La Maddalena)
Santa Maria Valverde (Santa Maria della Misericordia)
Santi Apostoli (Ss. Apostoli)
Scalzi (Santa Maria di Nazareth)
Volto Santo (Santa Maria dei Servi)
Scuola dell'Angelo (Chiesa Evangelica Luterana)
Crociferi (next to Gesuiti)
I have a long wish list for Cannaregio: San Marziale (another church with a miracle-working Madonna statue, this one supposedly traveled to Venice on her/its own power); San Marcuola (the church on the Grand Canal with the unfinished façade, it has one of seven Tintoretto Last Suppers in Venice), and San Michele in Isola (the first Renaissance church in Venice, it’s out on the cemetery island which is traditionally considered to be a part of this sestiere). I also want to visit the synagogues, which you can do on a guided tour that begins at the Museum Ebraico.
At one time, San Marziale had a Titian Tobias and the Angel, but I’ve read that the painting’s been moved to Madonna dell”Orto so I want to check that out since I don’t remember seeing it the last time I was in that church.
Six weeks from today, I’ll be in Venice!
Update, Dec. 2007: Went inside San Marziale and San Marcuola, two of the churches on my wish list above. San Michele in Isola was closed for restoration but I learned that there are actually two churches on the cemetery island; I've added the beautiful San Cristoforo to both the church list and my personal list.
The Titian painting has been moved from San Marziale to Madonna dell' Orto; it's in the second chapel on the right.
Update, Dec. 2008: Found the Evangelical Lutheran church open. San Michele in Isola is still closed for restoration and remains at the top of my wish-list.
Update 11/10. Visited Santa Fosca. Beautiful little church.