There are a number of shrines in Venice connected in one way or another to the iconic gondoliers. This one houses a beautiful relief of the Madonna and Child, with God the Father above them raising his hand in blessing, and carvings of two gondolas below.
This shrine can be found on the Ponte della Paglia (the bridge that's always filled with tourists looking at the Bridge of Sighs). The sacred image is known as the Madonna of the Gondoliers (or Our Lady of the Traghetto) not only because of the gondola carvings but also because the shrine is placed so that it's clearly visible to gondolas crossing under the bridge.
It was nice of this gondola with pink roses to float into my photo when I was admiring the shrine. :)
This bridge was built in 1360 and was enlarged in the 19th century. The shrine was added in 1583.
A John Ruskin drawing of the Ponte della Paglia and the Palazzo Ducale~
A vintage photo (1910) of the bridge~