The bigger, more significant churches in Venice charge an admission fee of three Euro (St Marks being an exception). But you can buy a pass, called a “Chorus Pass”, for nine Euro, which gives admission to 16 of the most significant churches. We only came across this by accident, in conversation with an attendant – after spending three Euro on more than a few occasions.

Church attendants don't automatically offer this, particularly if they have little English. The pass comes with a good map and is great value. Just think – for nine Euro, you can see some of the finest works in Venice. The pass has a validity of one year.

Thank you for all of your posts Peter. They will be very helpful for many visitors to Venice.

Thanks Peter, this is great to know. Do you know where in general the 'chorus pass' can be bought. Does anyone know which of the significant churches it includes.
I can't wait to be in Venice... Lissa

http://www.chorusvenezia.org/

1) Church of Santa Maria del Giglio
2) Church of Santo Stefano
3) Church of Santa Maria Formosa
4) Church of Santa Maria dei Miracoli
5) Church of San Giovanni Elemosinario
6) Church of San Polo
7) Basilica of Santa Maria Gloriosa dei Frari
8) Church of San Giacomo dall'Orio
9) Church of San Stae
10) Church of Sant'Alvise
11) Church of the Madonna dell'Orto
12) Church of San Pietro di Castello
13) Church of the Santissimo Redentore
14) Church of Santa Maria del Rosario (Gesuati)
15) Church of San Sebastiano
16) Church of San Giobbe

Oops, I forgot. You can buy the Pass at any of the participating churches and I believe you can also find it wherever Venice Cards are sold.