On our last morning, we took a quick boat excursion to Murano Island to visit the famous glass-blowing factories there. Legend has it that centuries ago, the factories were in Venice but too many of them caught on fire and threatened the city, so the Doges (sort of like powerful Venetian "mayors") relocated them to nearby Murano.
The tour included a chance to watch the glass being sculpted (for approximately 10 minutes), followed by a tour of the glass showroom (approximately 90 minutes)! I had never seen so much glass in one place...