A post over at BLDGBLOG (one of my favorite sites) surmises what Venice will be like once the city is completely depopulated of actual residents, a phenomenon that some observers predict will occur within the next 30 years. From The Guardian, last year:
Depopulation is getting to the point of no return, the Venice council housing chief, Mara Rumiz, said following the publication this week of the latest figures. "Beyond then, Venice will never again be a normal city, but will become a mere tourist destination and lose its charm - even for the tourists themselves," she was quoted as telling the daily La Repubblica yesterday.
If you want to know what the streets of Venice were like in the pre-ghost town days, pick up a copy of James H. S. McGregor's Venice from the Ground Up, a lively tour through the streets and canals of the once-powerful city.