Complex of Hue Monuments (inscribed 1993): Vietnam’s last imperial capital under the Nguyen dynasty (1802–1945), with 10 km of citadel walls, the Purple Forbidden City (modelled on Beijing), and the Noon Gate where Emperor Bảo Đại abdicated in 1945. The 1968 Tet Offensive destroyed 40% of the Purple Forbidden City; restoration ongoing. Seven royal tombs along the Perfume River.

Great Zimbabwe (inscribed 1986) is the largest ancient stone structure in Africa south of Egypt: the Great Enclosure’s elliptical wall (250m circumference, 11m high, 5m thick) was built dry-stone without mortar by the Zimbabwe Kingdom (1100–1450 CE), pop. 18,000. Colonial Rhodesia denied Africans built it until 1980. The Zimbabwe Bird soapstone figurines became the nation’s symbol.

Old Town of Lamu (inscribed 2001) is the best-preserved Swahili settlement in East Africa: coral stone houses, 23 mosques, 2,000 working donkeys (no cars ever), elaborately carved wooden doors, and a surviving dhow-building tradition. The 14th-century town traded ivory, gold, and enslaved people across the Indian Ocean to Arabia, Persia, and India.

Fasil Ghebbi (inscribed 1979) is the “Camelot of Africa”: Emperor Fasilides’s five-palace walled enclosure (c. 1635–1667 CE), a synthesis of Ethiopian, Portuguese, and Mughal architecture. The Timkat Festival (Ethiopian Epiphany, January) fills the 17th-century Fasilides Bath with tens of thousands of white-robed Orthodox faithful and is UNESCO-listed Intangible Heritage.

Aksum (inscribed 1980) was one of the four great empires of the ancient world — its stelae field has obelisks up to 33m (the tallest ancient monolith ever attempted); the Stele 2 (24m) was in Rome from 1937 to 2008, removed by Mussolini. The Church of Our Lady Mary of Zion claims to house the Ark of the Covenant, guarded by a single monk for life.

Cartagena de Indias (inscribed 1984) is the most fortified Spanish colonial port in the Americas: the Castillo de San Felipe de Barajas (1536–1657), 11 km of city walls (up to 17m thick), and Admiral Blas de Lezo’s 1741 defeat of a British fleet of 186 ships with only 3,000 men. The coloured colonial city within the walls is García Márquez’s city — the setting of “Love in the Time of Cholera.”

Erbil Citadel (inscribed 2014, In Danger) is one of the oldest continuously inhabited settlements in the world: a 26-metre-high artificial mound (tell) of 8,000+ years of compressed urban debris — ancient Arbela of the Assyrian Empire, the Ishtar Temple, and the city where Darius III fled after Alexander’s victory at Gaugamela (331 BCE). The Kurdistan Region’s best-preserved pre-Islamic heritage.