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Timgad

Timgad is the ruin of a Roman town in Algeria. Its streets were laid out in straight lines, like a checkerboard!

Timgad is the ruin of a Roman town in the mountains of Algeria. It was founded in 100 AD, and its streets crossed at right angles in a neat grid. Columns, an arch, baths and rows of stone seats still stand among its stone streets.

Timgad, the Roman Colonia Marciana Traiana Thamugadi, was founded from nothing in 100 AD by the emperor Trajan as a military colony on the northern slopes of the Aurès mountains. UNESCO calls its square, grid-planned layout an excellent example of Roman town planning, and the site has been on the World Heritage List since 1982.

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Photo: Xiaotong Gao, CC BY-SA 3.0, via Wikimedia Commons

Discover Timgad

Timgad is in Algeria, in Africa. It was a Roman town long ago.

Now it is ruins. You can still walk along its old stone streets.

Timgad lies on the northern slopes of the Aurès mountains in Algeria, 480 kilometers southeast of the capital, Algiers. Nearly 2,000 years ago it was a busy Roman town.

Today its ruins cover a large area, with columns, gateways, baths and houses. UNESCO calls Timgad an excellent example of Roman town planning, and it has been a World Heritage Site since 1982.

UNESCO places Timgad north of the Aurès massif, in a mountainous site 480 km southeast of Algiers and 110 km south of Constantine, in the commune of Timgad, Batna province. The property covers 90.54 hectares.

Inscribed in 1982 under criteria (ii), (iii) and (iv), it is described as a consummate example of a Roman military colony created from nothing, whose plan, laid out with great precision, illustrates Roman urban planning at its height.

Where
Batna province, Algeria; 480 km southeast of Algiers
Founded
100 AD
Site area
90.54 hectares
World Heritage
inscribed 1982
Photo of Timgad
Photo: Xiaotong Gao, CC BY-SA 3.0, via Wikimedia Commons

A town drawn on a grid

The Romans started Timgad in the year 100.

The town grew and grew, until it spread past its walls!

The Roman emperor Trajan founded Timgad in 100 AD as a military colony. It was planned from the start inside a square wall, with straight streets crossing at right angles.

By the middle of the 100s, the town had grown so fast that it spread beyond its walls. New markets, baths and other public buildings were built in the new neighborhoods. People stopped living in Timgad after the 700s.

The Colonia Marciana Traiana Thamugadi was founded in 100 AD by Trajan, created from nothing as a military colony. By the middle of the 2nd century its rapid growth had burst the narrow limits of the original foundation, and the city spread beyond its ramparts, with a capitol, temples, markets and baths in the new quarters. Most of these date from the Severan period, which UNESCO calls the city's golden age.

A fortress was built to its south in 539 from reused Roman blocks. UNESCO says it ceased to be inhabited after the 8th century. Archaeological excavations ran almost continuously from 1881 to 1960.

Through the years

Stone streets and buildings

The town's buildings were made of stone.

Its streets were covered with big flat stones.

Timgad's buildings were made entirely of stone. Its streets were paved with large, flat, rectangular slabs of limestone.

Two main streets crossed the town at right angles. The Romans called them the cardo and the decumanus. The other streets followed the same grid, so the town looked like a checkerboard from above.

Timgad's square enclosure and orthogonal plan were organized by the cardo and the decumanus, the two perpendicular routes through the city. UNESCO notes that the grid of the original military camp governed the site's development in every later period.

The buildings were constructed entirely of stone and frequently restored under the Empire: the Trajan Arch in the middle of the 2nd century, the Eastern Gate in 146 and the Western Gate under Marcus Aurelius. The streets were paved with large rectangular limestone slabs.

Baths, mosaics and an arch

Timgad had 14 bath houses! You can still see them.

Some houses had floors made of tiny colored stones.

The people of Timgad cared about public comfort: 14 baths can still be seen today. The houses came in many sizes, and some had beautiful mosaics, pictures made from small pieces of colored stone.

Timgad also has an arch called the Trajan Arch, city gates, markets and places for shows, all built in stone.

UNESCO highlights the attention paid to public conveniences, attested by the 14 baths still visible, and the houses of varying sizes, which 'dazzle by their sumptuous mosaics', intended to make up for the lack of precious marble.

Under criterion (iv) it lists a rich architectural inventory from the different stages of construction: the defensive system, buildings for public conveniences and spectacles, and a religious complex. It calls Timgad a living image of Roman colonization in North Africa over three centuries.

Baths
14 still visible
Main streets
the cardo and the decumanus
Excavations
almost continuous from 1881 to 1960
Photo of Timgad
Photo: Xiaotong Gao, CC BY-SA 3.0, via Wikimedia Commons

Rows of stone seats

In this photo, rows of stone seats curve around a flat stone floor. Can you find the arch far away?

This photo was taken on 20 February 2015. In front, curved rows of stone seats rise around a paved half-circle, like a theater. Behind them stretch the ruins: columns, low walls and paved streets.

Far away on the left stands a stone arch, and today's houses and distant mountains line the horizon.

The photograph (20 February 2015, by Xiaotong Gao, via Panoramio) looks across the ruins from a raised viewpoint: in the foreground a semicircle of stepped stone seating around a paved half-circle, then rows of columns, low walls and paving, a stone arch at the far left and modern buildings and mountains on the horizon.

UNESCO notes that visitors to an annual festival once put pressure on the fragile ruins, and that the festival's activities were moved outside the site to protect it.

Photo of Timgad
Photo: Xiaotong Gao, CC BY-SA 3.0, via Wikimedia Commons

Amazing facts

  • Timgad had 14 bath houses!

    Fourteen baths can still be seen at Timgad today.

    UNESCO says the 14 baths still visible show the attention Timgad paid to public conveniences.

  • Timgad was built where there was no town before!

    Timgad was not built on an older town: the Romans created it from nothing in 100 AD.

    UNESCO describes Timgad as a Roman military colony created ex nihilo, from nothing, in 100 AD.

  • Some houses had floors made of tiny colored stones!

    Many houses at Timgad had beautiful mosaics, pictures made from small pieces of stone.

    The houses' sumptuous mosaics were meant to make up for the lack of precious marbles, UNESCO says.

Words to know

ruins
what is left of old buildings after they have fallen down
colony
a new town set up by people from another country
grid
a pattern of straight lines that cross at right angles
mosaic
a picture made from many small pieces of stone, glass or tile
column
a tall post that holds up a roof
excavation
careful digging to find things from the past

Discovery challenge

  1. In which country is Timgad?

    In which country are the ruins of Timgad?

    In which country does Timgad lie, north of the Aurès massif?

    • Algeria
    • Canada
    • India
    Show the answer

    Algeria

    Algeria, in Africa!

    Algeria, in North Africa.

    Algeria, in Batna province.

  2. Who built Timgad?

    Which ancient people founded Timgad?

    Which empire founded Timgad as a military colony in 100 AD?

    • The Romans
    • The Vikings
    • The Maya
    Show the answer

    The Romans

    The Romans!

    The Romans, in 100 AD.

    The Roman Empire's: the emperor Trajan founded it in 100 AD.

  3. What were Timgad's streets like?

    How were Timgad's streets laid out?

    What kind of plan, set by the cardo and decumanus, did Timgad follow?

    • Straight lines in a grid
    • Round circles
    • Winding paths
    Show the answer

    Straight lines in a grid

    Straight, like a checkerboard!

    A neat grid of straight streets.

    An orthogonal grid inside a square enclosure.

  4. How many baths can you still see at Timgad?

    How many baths are still visible at Timgad?

    How many baths attest to Timgad's attention to public conveniences?

    • 14
    • 1
    • 100
    Show the answer

    14

    14!

    14 baths.

    14, still visible today.

Nearby places

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For parents & teachers

What children will learn

  • Locate Timgad in Algeria and describe how a Roman town was planned on a grid.
  • Explain how archaeologists learn about a town that people left more than a thousand years ago.
  • Use a timeline from 100 AD to 1982 to practice counting centuries.

Recommended ages: 4 to 17 · About 15 minutes

Talk about it

  • Why might it be useful to plan a town's streets in a grid before anyone moves in?
  • Timgad had 14 baths. Why do you think public baths mattered in a Roman town?
  • Visitors once trampled the fragile ruins during a festival. How should we visit old places carefully?

Try at home or in class

  • Draw a town on graph paper with two main streets crossing in the middle, and add houses, baths and a market.
  • Make a small mosaic by gluing pieces of colored paper onto card.

Key vocabulary: ruins, colony, grid, mosaic, column, excavation

Where these facts come from

  1. Wikidata , Wikimedia Foundation (CC0 1.0)
  2. UNESCO World Heritage List , UNESCO World Heritage Centre (Linked as a reference; site facts come from Wikidata)
  3. Timgad (World Heritage List) , UNESCO World Heritage Centre
  4. File:Timgad, Algeria - panoramio (30).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: Xiaotong Gao, CC BY-SA 3.0, via Wikimedia Commons · source · license