To do this bit of exploration, it will be necessary to get to the Piazzale Roma vaporetti stops by water bus or on foot. I used the 4.2 from Castello, and when I got off, I turned to my right, to follow the Fondamenta di S Chiara.
Not too far along here, you will encounter the Chiesa SS Nome di Gesu S. Chiara, which is still in use.
A little further, and you come across the Chiesa S. Andrea Apostolo, which is from the XIV century, but no longer used as a church.
The campo of this church forms part of the structure of the People Mover, which transports people between Piazzale Roma to the Tronchetto, where they can join their (too darn big) cruise ship.
On one side of the campo is the Court of Appeal of Venice, which explained the people and their lawyers standing around smoking and quietly consulting in the sunshine, before entering to plead their case.