Ruskin, John. The Stones of Venice. Vol. 2. 3 vols. Project Gutenberg, 2009. https://www.gutenberg.org/ebooks/30754.
The Ca’ Dario on the Grand Canal in Venice has lately acquired a bad reputation, but it is almost guaranteed ghost-less.
The paterae in Venice are small round reliefs that are scattered around the city, most of them dating to the medieval period.