Ghadames or Ghadamis /ɡəˈdæmɪs/ (Berber: ʕademis; Arabic: غدامس‎‎ ɣadāmis, Libyan vernacular: ɣdāməs, Latin: Cidamus, Cydamus) is a Berber town in the Nalut District of the Tripolitania region in northwestern Libya.

Ghadamès, known as 'the pearl of the desert', stands in an oasis. It is one of the oldest pre-Saharan cities and an outstanding example of a traditional settlement. Its domestic architecture is characterized by a vertical division of functions: the ground floor is used to store supplies; then another floor for the family, overhanging covered alleys that create what is almost an underground network of passage ways; and, at the top, open-air terraces reserved for the women.

Ghadames lies roughly 462 km (287 mi) to the southwest of Tripoli, near the borders with Algeria and Tunisia. Ghadames borders Illizi Province, Algeria and Tataouine Governorate, Tunisia.The oasis has a population of around 10,000, mainly Berbers.

The old town, inscribed in 1986 as a UNESCO World Heritage site, was de-populated of its inhabitants throughout the 1990s, leaving the old buildings at risk of collapse due to a lack of maintenance. It has been listed on the list of world heritage in danger since 2016 among four other sites in Libya, because of damage caused by the Libyan Civil War affecting the country and the threat of further damage it poses.

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