One of a small handful of cities with a genuine — and genuinely contested — claim to continuous habitation since deep antiquity. Courtyard houses behind unmarked doors, the Umayyad Mosque at first light, and a guild street where brass is still worked by hand.
The claim you will see repeated is that Damascus is the oldest continuously inhabited city on earth. The honest version is more interesting: it is one of a small group — with Aleppo, Byblos and Jericho — where the claim is real, argued over, and unresolved. Carbon dating at nearby Tell Ramad points to occupation from around 6300 BC. The walled city is conventionally put in the 3rd millennium BC.
UNESCO inscribed the Ancient City in 1979 for roughly 125 monuments spanning Aramean, Roman, Byzantine, Umayyad, Ayyubid, Mamluk and Ottoman Damascus. About 4.5 km of wall still rings it, pierced by eight gates, seven of which trace a Roman circuit.
The Old City came through the war comparatively better than Aleppo or Palmyra — it was never a frontline in the same way. That is not the same as untouched. Years of war, sanctions and underinvestment put it on the Danger List in 2013, and it is still there.