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Canal Grande and Rialto Bridge, Venice - part of UNESCO World Heritage Site Ref

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Grand Canal (Venice)

The Grand Canal is the biggest waterway inside Venice, Italy. Instead of cars on a street, boats travel along it, past old palaces and under bridges!

The Grand Canal is the main waterway running through the city of Venice, in Italy. About 3.8 kilometers long, it curves through the city in a backward S shape, lined with houses and grand palaces. Four bridges cross it, including the Rialto Bridge.

The Grand Canal (Canal Grande, locally the Canalazzo) is Venice's largest inner waterway, probably an ancient river bed: 3,800 m long, 30–70 m wide and at most 5 m deep, it crosses the city from northwest to southeast in a reversed S, crossed by four bridges and with 45 smaller canals branching off it. It lies within 'Venice and its Lagoon', a World Heritage Site since 1987.

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Photo: Martin Falbisoner, CC BY-SA 4.0, via Wikimedia Commons

Discover the Grand Canal

The Grand Canal is in Venice, a city in Italy built on lots of small islands.

In Venice, many streets are made of water. The Grand Canal is the biggest one!

Venice is built on 118 small islands in a lagoon in Italy. Canals run through the city like streets of water, and the Grand Canal is the largest waterway inside it.

It crosses Venice from northwest to southeast in the shape of a backward S, dividing the city into two unequal parts. Locally it is called the Canalazzo.

The Treccani encyclopedia calls the Canal Grande the largest inner waterway of Venice, known locally as the Canalazzo, and probably an ancient river bed. It crosses the city from northwest to southeast in a reversed S, dividing it into two unequal parts.

UNESCO explains that when the tiny islands of the lagoon were joined into one city, little of the original landscape remained except what became its canals, such as the Giudecca Canal, St Mark's Canal and the Grand Canal, along with a network of small canals (rii) that are the city's arteries.

Where
Venice, Italy
Length
3,800 m
Width
30–70 m
World Heritage
part of Venice and its Lagoon, inscribed 1987
Canal Grande and Rialto Bridge, Venice - part of UNESCO World Heritage Site Ref
Photo: Martin Falbisoner, CC BY-SA 4.0, via Wikimedia Commons

A city on water

People started building Venice long, long ago, on small islands in shallow water.

The Grand Canal may once have been a river!

UNESCO says Venice was founded in the 5th century on 118 small islands and became a great sea power by the 10th century. As the islands were joined into one city, little of the old landscape was left except what became its canals.

The Treccani encyclopedia says the Grand Canal was probably once a river bed. Today 45 smaller canals branch off it.

UNESCO dates Venice's founding to the 5th century and its rise as a major maritime power to the 10th century. The whole lagoon city, it says, is an architectural masterpiece, and it was inscribed as 'Venice and its Lagoon' in 1987.

Treccani describes the Grand Canal as probably an old river bed. From it branch 45 smaller canals, the rii, which UNESCO calls the arteries of a city on water.

Through the years

Palaces along the water

Tall houses and fancy palaces line both sides of the canal.

Boats travel past them, and wooden posts stand in the water.

Houses and rich palaces line both sides of the Grand Canal. Treccani calls them a splendid survey of Venetian architecture.

Boats travel along the canal, and wooden posts stand in the water near the banks. UNESCO says that waves made by motor boats, together with more frequent high tides, are among the main causes of damage to Venice's buildings.

Treccani describes the canal as flanked by houses and rich palaces that make a splendid survey of Venetian architecture. UNESCO lists the grand monuments of the Republic's golden age and the more modest homes of the city's six quarters (sestieri) as part of Venice's incomparable series of architectural ensembles.

UNESCO also notes that more frequent and higher tides, together with waves made by motor boats, are among the main causes of damage to the city's buildings.

Four bridges

Only four bridges cross the whole Grand Canal. One is the Rialto Bridge.

The canal is not very deep: at most about 5 meters.

Only four bridges cross the Grand Canal in its 3.8 kilometers: the Station Bridge, the Rialto Bridge, the Accademia Bridge and the Constitution Bridge. The Rialto Bridge, in the photo, is a wide stone arch with rows of arches along its top.

The canal is 30 to 70 meters wide but at most 5 meters deep.

Treccani lists the four bridges that cross the canal: della Stazione, di Rialto, dell'Accademia and della Costituzione. The canal is 3,800 m long, between 30 and 70 m wide and no more than 5 m deep.

In the photo, the Rialto Bridge crosses as a single wide stone arch, with arcades along its top and crowds of people on it.

Bridges across it
4: Stazione, Rialto, Accademia, Costituzione
Deepest point
about 5 m
Smaller canals branching off
45
Canal Grande and Rialto Bridge, Venice - part of UNESCO World Heritage Site Ref
Photo: Martin Falbisoner, CC BY-SA 4.0, via Wikimedia Commons

Boats and the Rialto Bridge

In this photo, boats zoom along the canal toward a white stone bridge. Can you find the bridge?

This photo was taken on 23 September 2017. It looks along the Grand Canal toward the Rialto Bridge. Boats travel on the green water, and wooden posts stand near the left bank.

On the left are tall palaces with balconies and green shutters, and a terrace with tables and red awnings by the water. On the right are more buildings and a bell tower.

The photograph (23 September 2017, by Martin Falbisoner; a Commons featured picture and Picture of the Day) looks along the canal to the Rialto Bridge, with motorboats and a larger passenger boat on the water, mooring posts by the left bank, palaces with balconies, a waterside terrace with tables and, on the right, a bell tower.

UNESCO describes Venice as a city that seems to float on the waters of the lagoon, a landscape that inspired painters such as Canaletto, Guardi and Turner.

Canal Grande and Rialto Bridge, Venice - part of UNESCO World Heritage Site Ref
Photo: Martin Falbisoner, CC BY-SA 4.0, via Wikimedia Commons

Amazing facts

  • The Grand Canal may once have been a river!

    The Grand Canal was probably once the bed of a river.

    Treccani describes the Grand Canal as probably an ancient river bed.

  • Only four bridges cross this long canal!

    In its 3.8 kilometers, the Grand Canal is crossed by only four bridges.

    Four bridges cross the canal: della Stazione, di Rialto, dell'Accademia and della Costituzione.

  • Venice is built on 118 little islands!

    Venice spreads over 118 small islands in a lagoon.

    Founded in the 5th century, Venice spreads over 118 small islands.

Words to know

canal
a channel of water that boats can travel along
lagoon
a shallow body of sea water partly cut off from the open sea
palace
a large, grand house
river bed
the bottom of a river, where its water flows
arcade
a row of arches held up by columns or pillars
rio
the Venetian name for one of its small canals (plural: rii)

Discovery challenge

  1. What travels along the Grand Canal instead of cars?

    What carries people along the Grand Canal?

    What kind of traffic does UNESCO say makes waves that damage Venice's buildings?

    • Boats
    • Trains
    • Buses
    Show the answer

    Boats

    Boats!

    Boats.

    Motor boats.

  2. How many bridges cross the Grand Canal?

    How many bridges cross the Grand Canal?

    How many bridges does Treccani list across the canal?

    • 4
    • 40
    • 1
    Show the answer

    4

    Four!

    Four.

    Four: Stazione, Rialto, Accademia, Costituzione.

  3. In which country is Venice?

    In which country is the Grand Canal?

    In which country is the lagoon city crossed by the Grand Canal?

    • Italy
    • Spain
    • Egypt
    Show the answer

    Italy

    Italy!

    Italy.

    Italy.

  4. What letter shape does the Grand Canal make?

    Which letter does the Grand Canal's shape look like, written backward?

    In what shape does the canal cross Venice from northwest to southeast?

    • An S
    • An O
    • An X
    Show the answer

    An S

    A backward S!

    A backward S.

    A reversed S.

  5. How long is the Grand Canal?

    About how long is the Grand Canal?

    What length does Treccani give for the canal?

    • About 3.8 kilometers
    • About 38 meters
    • About 380 kilometers
    Show the answer

    About 3.8 kilometers

    About 3.8 kilometers!

    About 3.8 km.

    3,800 m.

Nearby places

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For parents & teachers

What children will learn

  • Explain how a city can use canals as streets.
  • Describe a lagoon and how a city can be built on many small islands.
  • Explain why waves from motor boats can damage buildings at the water's edge.

Recommended ages: 4 to 17 · About 15 minutes

Talk about it

  • What would be different about going to school in a city where many streets are water?
  • Only four bridges cross the Grand Canal. How else might people get from one side to the other?
  • Why might the waves from boats be a problem for very old buildings?

Try at home or in class

  • Draw a map of an imaginary island city with a big S-shaped canal, smaller canals and four bridges.
  • In a tray of water, push a toy boat quickly past a sand 'building' at the edge and watch what the waves do.

Key vocabulary: canal, lagoon, palace, river bed, arcade, rio

Where these facts come from

  1. Wikidata , Wikimedia Foundation (CC0 1.0)
  2. Canal Grande (Enciclopedia on line) , Istituto della Enciclopedia Italiana Treccani
  3. Venice and its Lagoon (World Heritage List) , UNESCO World Heritage Centre
  4. File:Panorama of Canal Grande and Ponte di Rialto, Venice - September 2017.jpg , Wikimedia Commons
  5. Wikimedia Commons , Wikimedia Foundation (Per file (public domain, CC0, CC BY or CC BY-SA); see each media record)

Checked, not yet human-reviewed. Last updated November 1, 2026. Spotted a mistake? Tell us.

Picture credits
  • Photo: Martin Falbisoner, CC BY-SA 4.0, via Wikimedia Commons · source · license