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The classical Venetian boat is the gondola, although it is now mostly used for tourists, or for weddings, funerals, or other ceremonies, due to its cost. Most Venetians now travel by motorised waterbuses ("vaporetti") which ply regular routes along the major canals and between the city's islands. The city also has many private boats. The only unmotorized gondolas still in common use by Venetians are the traghetti, foot passenger ferries crossing the Grand Canal at certain points without bridges. Venice is served by the newly rebuilt Marco Polo International Airport, or Aeroporto di Venezia Marco Polo, named in honor of its famous citizen. The airport is on the mainland and was rebuilt away from the coast so that visitors now need to get a bus to the pier, from which a water taxi or Aliliguna waterbus can be used.

Sinking of Venice The buildings of Venice are constructed on closely spaced wood piles (under water, in the absence of oxygen, wood does not decay) which penetrate alternating layers of clay and sand. Most of these piles are still intact after centuries of submersion. The foundations rest on the piles, and buildings of brick or stone sit above these footings. The buildings are often threatened by flood tides pushing in from the Adriatic between autumn and early spring.

During the 20th century, when many artesian wells were sunk into the periphery of the lagoon to draw water for local industry, Venice began to subside. It was realised that extraction of the aquifer was the cause. This sinking process has slowed markedly since artesian wells were banned in the 1960s. However, the city is still threatened by more frequent low-level floods (so-called Acqua alta, "high water") that creep to a height of several centimeters over its quays, regularly following certain tides. In many old houses the former staircases used by people to unload goods are now flooded, rendering the former ground floor uninhabitable. Thus, many Venetians resorted to moving up to the upper floors and continue with their lives.

Some recent studies have suggested that the city is no longer sinking, but this is not yet certain; therefore, a state of alert has not been revoked. In May 2003, Silvio Berlusconi, the Italian Prime Minister, inaugurated the MOSE project, which will lay a series of 79 inflatable pontoons across the sea bed at the three entrances to the lagoon. When tides are predicted to rise above 110 centimetres, the pontoons will be filled with air and block the incoming water from the Adriatic sea. This challenging engineering work is due to be completed by 2011. To make things worse, however, sea levels are rising anyway, and in fact, the whole east coast of Italy is sinking (although very slowly). Some experts say that the best way to protect Venice is to physically lift the City to a greater height above sea level - by pumping water into the soil underneath the city. This way, some hope, it could rise above sea levels, protecting it for hundreds of years, and eventually the MOSE project may not be necessary (it will, controvertially, alter the tidal patterns in the lagoon, damaging some wildlife).