City officials say the new rules, set to take effect in June, will help lessen the impact of tourism on the local community.
A bus carrying dozens of people plummeted 50 feet, causing a fiery crash that killed 21 people and injured at least 15, mostly foreign tourists returning to a nearby campsite.
UNESCO, the United Nations body that designates and protects World Heritage sites, says it will continue to monitor the famed Italian city's issues, including climate change and over-tourism.
The impacts of climate change including related disasters, such as wildfires and sea level rise, are increasingly raising a question about how best to save cultural heritage.
The wooden vessel is called "Noah's Violin." As it floated through Venice's Grand Canal on Saturday, members of the string quartet on board serenaded viewers with their own (real) instruments.