Canals, tides and islands
Venice stands on more than a hundred small islands in a shallow, tidal lagoon. This guide explains how its canals, bridges, tides and islands fit together, and how to move through them on foot and by boat.
Start here
In Venice the water is not scenery. It is the street plan, the delivery route, the drainage system and, twice a day, the clock.
Most cities grew beside a river. Venice grew in the shallow lagoon where several rivers once met the Adriatic. The first settlers built on the firmest patches of mud and sand they could find, drove wooden piles into the clay below and laid stone and brick on top. Over the centuries those patches were joined, banked and drained until they read as one city, cut into pieces by canals that still carry boats, goods and the tide.
This site is written for visitors who want to understand what they are looking at. It starts with the Grand Canal and the smaller rii, explains the lagoon and the high tides that flood St Mark’s Square in the colder months, and then crosses the water to the islands: Murano and its furnaces, Burano and its painted houses, quiet Torcello, the long sandbars of the Lido and Pellestrina, and Giudecca and San Giorgio across the basin from the Doge’s Palace.
Everything here is independent and non-commercial. We sell nothing and recommend no businesses. Where details change from season to season, such as timetables and opening hours, we point you to the official sources rather than repeat figures that may already be out of date.
Soundings
Figures are rounded. Sources count islands, canals and bridges in different ways; some surveys reach 126 islands or more than 430 bridges.
The charts
Each chapter takes one piece of the water system and explains what you see, why it is there and how to get close to it.
Chart I
Nearly four kilometres of palaces, landing stages and traffic, crossed by only four bridges. How to read its façades and ride its full length.
Chart II
The narrow side canals are the city’s back streets. Why some have a quay on one side and blank walls on the other, and why some were filled in.
Chart III
From the last bridges without parapets to the Rialto and the Bridge of Sighs: how Venetians crossed their water, and the stories some bridges keep.
Chart IV
A shallow basin of mudflats, salt marsh and channels, shaped by rivers that the Venetians spent centuries pushing away from the city.
Chart V
Why the sea rises into the streets in autumn and winter, how the city warns its residents, and what the mobile barriers at the inlets do.
Chart VI
Water buses, gondola ferries and walking routes: a practical guide to moving through the city and out to the islands.
Chart of the lagoon
The historic city lies near the middle of the lagoon, joined to the mainland only by a long road and rail causeway. To the east, three gaps in the sandbars let the Adriatic in and out with every tide. The islands most visitors cross to are scattered north and south of the city: select a numbered dot, or use the list, to open its page.
Across the water
Each of these islands has a character of its own, and most are served by the regular water buses. Allow more time than the map suggests: the farther you go, the less often the boats run.
Seven small islands joined by bridges, where Venice moved its glass furnaces in 1291 to keep fire away from the city. Beyond the workshops, look for the arcaded brick apse of Santi Maria e Donato and its twelfth-century mosaic floor.
A fishing island known for its lace and for houses painted in strong, deliberate colours, with a leaning bell tower above the rooftops. A long footbridge leads to quieter Mazzorbo, with its vineyard and kitchen gardens.
Once one of the busiest places in the lagoon, it now has only a handful of residents. Its cathedral, founded in 639, holds a great Byzantine mosaic of the Last Judgement.
A barrier island with beaches on the sea side, tree-lined avenues, Liberty-style villas and the city’s film festival at the end of every summer. Unlike the historic centre, it has cars and buses.
A long, residential island of former factories, boatyards and gardens. Palladio’s Redentore faces the city, and in July a temporary pontoon bridge links it to the Zattere for the Redentore festival.
An island given over almost entirely to Palladio’s white church and its former monastery. The bell tower offers one of the best views back over the city and the lagoon.
Venetian words
A few local words make the city much easier to read. Street signs, maps and boat announcements use them all the time; the glossary has many more.
Practical notes
Deeper water
From refugees on marsh islands to a maritime republic that dominated the Adriatic for centuries, the story of Venice is a story of managing water: digging, dredging, diverting rivers and defending the sandbars. Jacopo de’ Barbari’s great woodcut of 1500 shows the city near the height of its power, with every canal and campanile in place.
The Adriatic rises and falls in the lagoon roughly twice a day. When wind, low pressure and a high tide coincide, the water climbs into the squares and alleys. Since 2020, rows of mobile gates at the three inlets can be raised to hold back the worst tides; the tides chapter explains how the system works and what it means for visitors.