I have never knowingly been to S. Zaccaria before, a treat, not least for its great Bellini.
First, the façade begin in the 1440s, completed towards the end of the century with its multiple decks of round-headed windows:-


Bellini’s Virgin and Child with SS. Peter, Catherine, Lucy and Jerome:-




The fifteenth-century choirstalls and gilt seats for the doge and his entourage in the Nun’s choir:-

Through to the Cappella di S. Tarasio:-

And a glimpse through to the High Altar:-
