World monuments · Jordan · Al-Khazneh: about the 1st century CE

Petra — Al-Khazneh (the Treasury)
design, history & builders

Petra is the rock-carved capital of the Nabataeans in southern Jordan. Its most famous monument, Al-Khazneh (the Treasury), is a 39-metre façade cut straight into a sandstone cliff, probably as a royal tomb around the 1st century CE. The Nabataeans also engineered dams and channels that let a desert city of thousands survive. Romans annexed it in 106 CE.

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Petra — Al-Khazneh (the Treasury), Ma'an Governorate, Jordan
Al-Khazneh (the Treasury) at the end of the Siq.Diego Delso, CC BY-SA 3.0, via Wikimedia Commons

At a glance: Petra — Al-Khazneh (the Treasury)

Location
Ma'an Governorate, Jordan
Built
Al-Khazneh: about the 1st century CE
Type
Rock-cut tomb façade in a caravan city · Royal
Style
Nabataean with Hellenistic influence
Commissioned by
Nabataean kings, probably Aretas IV for Al-Khazneh
Architects & builders
Not recorded
Materials
Carved into rose-red sandstone
Size
Al-Khazneh façade about 39 m high and 25 m wide

Petra: what it is

Petra grew rich on the incense and spice trade between Arabia and the Mediterranean. The Nabataeans carved hundreds of tombs, temples and houses into the surrounding cliffs, and built free-standing temples, theatres and colonnaded streets in the valley.

Visitors reach Al-Khazneh through the Siq, a winding gorge about 1.2 km long. The façade appears suddenly through a slit in the rock — an entrance experience that its designers may well have intended.

Petra, then and now

Real images only: an earlier view and a recent photograph, each credited and linked to its original file. Switch between them or compare side by side.

Al-Khazneh (the Treasury) at the end of the Siq.Al-Khazneh in a 19th-century photograph credited on Wikimedia Commons to Francis Frith, 1860s.Then · 1860sNow · TodayMove across the image to compare
Al-Khazneh in a 19th-century photograph credited on Wikimedia Commons to Francis Frith, 1860s. / Al-Khazneh (the Treasury) at the end of the Siq.Then: Francis Frith, Public domain, via Wikimedia Commons · Now: Diego Delso, CC BY-SA 3.0, via Wikimedia Commons

Petra: how it was designed

  • 01

    Carved from the top down

    Masons cut a sheer face into the cliff, then carved the façade from the top, standing on the uncut rock below, so no scaffolding was needed. The interior is a plain square chamber.

  • 02

    Two storeys of borrowed classicism

    The lower storey is a columned portico with a pediment; the upper storey has a round tholos flanked by broken pediments. These are Hellenistic forms from Alexandria, adapted by Nabataean taste.

  • 03

    A city designed around water

    Petra gets very little rain but sudden floods. The Nabataeans diverted floodwater with a dam and tunnel at the Siq entrance and cut channels and cisterns into the rock to store water year-round.

Construction timeline

  1. Nabataeans are recorded in the region; Petra becomes their capital.

  2. Al-Khazneh is carved, most likely under King Aretas IV (9 BCE – 40 CE).

  3. Rome annexes the Nabataean kingdom as the province of Arabia Petraea.

  4. A major earthquake damages much of the city.

  5. Swiss explorer Johann Ludwig Burckhardt reaches Petra in disguise, the first European known to do so in centuries.

  6. Inscribed by UNESCO in 1985; in 2003 excavation reveals tombs beneath the Treasury's forecourt.

How the design changed

Bullet holes in the urn

Local legend held that the stone urn on top was full of treasure, which gave the building its name. The urn is pitted with bullet marks from people trying to break it open.

Buried and revealed

Floods and sediment raised the ground in front of the Treasury by several metres over the centuries; excavation lowered it again and uncovered the tombs below.

Who built it

Petra was carved by Nabataean masons for their kings and leading families. The Nabataeans wrote in an Aramaic script that developed into Arabic script, but no inscription names the Treasury's designer or confirms whose tomb it was.

Where it is

Ma'an Governorate, Jordan · 30.3289° N, 35.4403° E · Open in OpenStreetMap. Nearest in this guide: Great Pyramid (416 km), Karnak (581 km), Göbekli Tepe (831 km).

416 km581 km831 kmPetra

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Built around the same time

Monuments in this guide begun within 250 years of Petra
MonumentCountryBuiltGap
ColosseumItalyc. 70–80 CE120 years later
Pyramid of the Sun, TeotihuacanMexicoc. 100–250 CE150 years later
PantheonItalyc. 113–125 CE163 years later
Terracotta ArmyChinac. 246–208 BCE; found 1974196 years earlier

Petra: questions people ask

Who built Petra's Treasury?

Nabataean masons carved it, most likely for King Aretas IV around the 1st century CE. No inscription names its designer or its owner.

Is the Treasury at Petra really a treasury?

No. Despite its name, which comes from a legend about treasure in the urn on top, it was probably a royal tomb or memorial temple.

How was Petra's Treasury carved?

From the top down: masons smoothed the cliff face and carved downward, standing on the rock beneath, so they did not need scaffolding.

When was Petra rediscovered?

Local Bedouin always knew it. For Europeans, Johann Ludwig Burckhardt reached Petra in 1812 and published his account.

Sources & image credits

  1. UNESCO World Heritage Centre — Petra
  2. Wikipedia — Petra
  3. Petra Development and Tourism Region Authority — Visit Petra
  4. Current photograph: The Treasury, Petra, Jordan5.jpg by Diego Delso, CC BY-SA 3.0 — original on Wikimedia Commons · licence.
  5. Historic image: Jordan Иордания. Петра. Храм-Мавзолей Эль-Хазне 1865 4436 t3e1fW.jpg by Francis Frith, Public domain — original on Wikimedia Commons.
  6. Coordinates from Wikidata. Images resized and converted to WebP; otherwise unaltered. Checked October 25, 2026.
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