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Best fortresses & citadels to visit worldwide

Fortresses were built to be hard to reach, and that is still their appeal. What survives is usually the defences themselves: ramparts, gates, towers and ditches, sometimes with barracks, cisterns, granaries and a commander’s house inside. Inca strongholds such as Sacsayhuaman show walls of huge fitted stones; the Roman forts on Hadrian’s Wall keep barracks, baths and latrines; Masada adds a palace on the cliff edge and the siege works below; Iron Age forts such as Dún Aonghasa are rings of drystone walls on a hilltop or cliff.

Sigiriya

Sigiriya, Sri Lanka

Sigiriya is a granite rock about 180 metres high in central Sri Lanka, crowned by the ruins of a palace that King…

525 tickets & tours

Sacsayhuaman

Cusco, Peru

Sacsayhuaman is the Inca stronghold on the hill above Cusco, famous for zigzag terrace walls of polished limestone…

41 tickets & tours

Waqrapukara

Cusco, Peru

Waqrapukara is a remote fortress-sanctuary in Acomayo Province, south of Cusco, built around a rock outcrop with two…

39 tickets & tours

Masada

Jerusalem, Israel

Masada is the desert fortress that Herod the Great built on a flat-topped rock above the Dead Sea, and the place where…

20 tickets & tours

Co Loa Citadel

Hanoi, Vietnam

Co Loa Citadel, about 17 km north of central Hanoi, is the spiral earthwork capital that tradition credits to King An…

15 tickets & tours

Hadrian’s Wall

Hexham, United Kingdom

Hadrian's Wall is the Roman frontier that ran 117 km across northern England from the Tyne to the Solway Firth,…

12 tickets & tours

Kuelap

Chachapoyas, Peru

Kuelap is the walled mountain-top city of the Chachapoya people, set at about 3,000 metres above the Utcubamba Valley…

11 tickets & tours

Yapahuwa Rock Fortress

Maho, Sri Lanka

Yapahuwa is a 13th-century royal citadel built around a granite rock that rises almost 100 metres above the plains of…

4 tickets & tours

Babylon Fortress

Cairo, Egypt

Babylon Fortress is the Roman stronghold at the heart of Coptic Cairo, built around AD 300 under Diocletian to guard…

1 ticket or tour

Old Sarum

Salisbury, United Kingdom

Old Sarum is the great earthwork hill 3 km north of Salisbury where an Iron Age fort of about 400 BC later held a…

1 ticket or tour

Sarmizegetusa Regia

Orăștioara de Sus, Romania

Sarmizegetusa Regia was the capital of the Dacian kings, a walled citadel and sacred precinct on a forested ridge of…

1 ticket or tour

Citania de Briteiros

Guimarães, Portugal

Citania de Briteiros is one of the largest Iron Age hill forts in north-west Iberia, a walled town of round stone…

No online ticket

Dún Aonghasa (Dun Aengus)

Inishmore, Ireland

Dún Aonghasa is a prehistoric stone fort on Inis Mór, the largest of the Aran Islands, built on the edge of a sheer…

No online ticket

Great Zimbabwe

Masvingo, Zimbabwe

Great Zimbabwe is the ruined capital of a medieval African kingdom near Masvingo and the largest stone structure built…

No online ticket

Nebet Tepe

Plovdiv, Bulgaria

Nebet Tepe is the rocky hill at the northern edge of Plovdiv Old Town where the city began, settled since about 4000…

No online ticket

Pukara de Quitor

San Pedro de Atacama, Chile

Pukara de Quitor is a stone fortress built by the Atacameno people on a steep hillside above the San Pedro river, 3 km…

No online ticket

Vindolanda

Henshaw, United Kingdom

Vindolanda is a Roman fort and civilian settlement on the Stanegate road, just south of Hadrian's Wall in…

No online ticket

Expect climbing. Sigiriya means a long stair and exposed metal steps up a rock, Masada a steep path or a cable car, Kuelap a cable car and walkways in cloud forest. Start early, before the heat and queues build, carry water and a warm layer at height, and wear shoes with grip. Walk beside walls rather than on them, and keep away from unfenced drops. In the Andes, give yourself a day or two to adjust to the altitude first.

The best in the catalogue are Sigiriya in Sri Lanka, with its frescoes and lion-paw stairway; Sacsayhuaman above Cusco in Peru; Masada in Israel, above the Dead Sea; Hadrian’s Wall and its forts in northern England; Kuelap in the mountains of northern Peru; and the stone enclosures of Great Zimbabwe.