Ad-Deir, Petra belongs to the years before the Common Era — dated here to c. 30 BCE at Petra, Nabataea. The date is a scholarly centre of gravity, not a foundation-stone timestamp.
The Monastery is wider than the Treasury, reached by 800 steps, a colossal carved hall for gathering as much as burying.
How it was made
Broken pediment and urn, simplified and huge. Interior is a single square — architecture as a cave with a mask.
Why it still counts as a wonder
It never needed a Greek list to be a wonder: the labour, the alignment, or the survival is enough.
If Al-Khazneh is the overture, Ad-Deir is the Nabataean symphony in one façade.
On dating
BCE in this series means years before the traditional birth of Christ, counted backward. A monument listed as c. 30 BCE may have been founded earlier, rebuilt later, or famous only in one phase. Where ancient writers disagree — as they do for Babylon’s gardens — we say so.
This is story 47 of 100 in The Trend Ledger’s illustrated desk on world wonders raised before the Common Era.