Venice is set to open an online booking service that will give tourists discounts if they plan their holiday in advance.
The system will help keep flows into the often overrun lagoon city manageable, officials say.
From Sunday, February 1, visitors will be able to book tickets at the Correr Museum and the Ducal Palace as well as city-edge parking space and bus and vaporetto rides.
At the website, www.veniceconnected.com, they'll be able to choose from 'green' days (city virtually empty), 'blue' days (medium full) and 'red' days (crowded), Deputy Mayor Michele Vianello told a press conference.
''This is a major step in making tourism in Venice more sustainable,'' he said, calling the colour coded system ''a thermometer of sustainability''.
''Tourists will be able to create their own holiday package including hotels, public services and tickets for museums and other events. And they can pay for this at one time after which they will be given an entry password''.
The city council will also throw in a free ticket to the city's famed casino and a free wi-fi connection along with its three-day packages.
On green days, a typical three-day package for two people will cost 209.30 euros online compared to 247 if paid after arrival - a saving of 31.70 euros.
Blue packages offer savings of 31.10 euros while three red days will cost 20.10 less online, Vianello said.
The new system has allowed the city to ditch plans to impose entry quotas or charge high-season entry fees, Vianello said.
For now only two city-owned museums are included but talks are going ahead to add the city's array of state-run sites as well as its churches, led by St Mark's Basilica.
In the wake of recent hotel wellies-and-all discounts to lure back tourists put off by pictures of St Mark's under water, the city is also putting up a video entitled Venice, A Livable City Even With Acqua Alta.
