🇰🇭 Cambodia · Hydraulic works
West Baray — Angkor Hydraulic Reservoir
Angkor (Baphuon style middle Angkor) · Khmer Hindu (Suryavarman I court)
Khmer 7.8×2.1 km reservoir 1050 CE 53 million m³ with West Mebon island temple, hydraulic empire core.
🇪🇸 Spain · Megalith
Tholos de El Romeral
Chalcolithic to Early Bronze Age (c.3800–2500 BCE) · Los Millares / Alentejo Chalcolithic (tholos tradition)
Antequera hill tholos (corbelled dome 5.2 m) with 26 m corridor — Mediterranean-type beehive tomb 4 km north of Menga/Viera.
🇨🇿 Czech Republic · Ancient city
Mikulčice-Valy Great Moravian Agglomeration
Early Middle Ages (6th c. settlement; Great Moravian 830–907) · Great Moravia (capital hypothesis)
Mikulčice-Valy Great Moravian Agglomeration in South Moravia, Hodonín District, Mikulčice, Morava floodplain, Czech Republic is a Early Middle Ages (6th c.
🇨🇳 China · Rock-cut
Yungang Grottoes — Western Caves Extension (Caves 26–40)
Northern Dynasties (Northern Wei late) · Tuoba Wei (Xianbei) Buddhist with Han artisan school
UNESCO Yungang western 15-cave zone 494–525 with central-pillar and collapsed colossus.
🇴🇲 Oman · Hydraulic works
Aflaj al-Ain Nizwa Branch — Daudi Falaj Highland Channel
Sasanian to Islamic · Omani, Sasanian Persian, Ibadi
Nizwa Daudi mother well 30 m with 8-km tunnel and shari'a sharing basin, UNESCO aflaj highland branch.
🇾🇪 Yemen · Hydraulic works
Sadd el-Arim Secondary Dam — Marib North Spillway
South Arabian (Sabaean to Himyaritic) · Sabaean Saba and Himyarite
Marib north secondary 750-m earthen with Almaqah sluice temple 50 musnad inscriptions, Sabaean 750 BCE spillway.
🇲🇷 Mauritania · Ancient village
Dhar Walata (Oualata)
Neolithic to medieval (1500 BCE–17th c; historic 11th c) · Tichitt culture → Soninke Wagadu → Beidane Moors
Neolithic to oasis caravan terminus: Tichitt-culture compounds plus red-white geometric plaster houses of 11th-c Ghana twin capital Biru.
🇪🇸 Spain · Hydraulic works
Les Ferreres Aqueduct (Devil's Bridge, Pont del Diable — Tarraco Aqueduct)
Roman Augustan (late Republic to early Principate) · Roman Tarraconensis (Tarraco Colonia)
217-m Augustan double-tier arcade (20 BCE–20 CE) 27 m high — Tarraco's Francolí aqueduct masterpiece.
🇪🇬 Egypt · Pyramid
Headless Pyramid (Lepsius XXIX)
Late Middle Kingdom / Second Intermediate Period (13th Dynasty) · Ancient Egyptian
13th-Dynasty unfinished mudbrick pyramid at South Saqqara (Lepsius XXIX) — 52.5 m base 'Headless Pyramid' with robbed casing and unfinished quartzite burial chamber, c.1720–1640 BCE.
🇾🇪 Yemen · Hydraulic works
Marib North Sluice & Northern Oasis Canal (Sadd Ma'rib al-Shamali)
Sabaean to Himyarite (8th c BCE–6th c CE) · Sabaean / Himyarite
North sluice of Great Dam of Ma'rib (750 BCE–575 CE) — 23-m cut-stone control feeding northern oasis.
🇨🇳 China · Hydraulic works
Dujiangyan Irrigation System
Warring States, Qin to Qing continuous · Qin state engineers under Li Bing (later successive dynasties maintenance)
256 BCE Qin weir still irrigating 5,300 km²—world's oldest dam-less hydraulic system.
🇪🇸 Spain · Ancient city
Tartessos and Doñana – Western Atlantis Hypothesis
Late Bronze to Iron Age Tartessian (1200–550 BCE collapse) · Iberian Tartessian with Phoenician Tartessos emporion + Greek
Arganthonios's Tartessian kingdom Guadalquivir — Doñana marsh 'rings' claimed Atlantis 2011, disproved as salinas.
🇪🇸 Spain · Rock art
Albarracín Rock Art — Pinsapar and Prado del Navazo
Epipalaeolithic to Iberian (8000 BCE – 500 CE) · Epipalaeolithic hunters, Neolithic, Chalcolithic Schematic, Iberian
Aragon pine forest 22 shelters Levantine white archers and schematic bull 6 ka BCE–Iberian, UNESCO 874.
🇪🇬 Egypt · Pyramid
Pyramid of Khentkaus II (Abusir)
Old Kingdom (5th Dynasty) · Ancient Egyptian
5th-Dynasty queen-mother pyramid of Khentkaus II at Abusir — 25 m base true pyramid c.2470 BCE hidden as mastaba until Verner 1978–90 excavation, with mortuary temple archive.
🇵🇪 Peru · Geoglyph
Chinchaysuyo Ceque Lines (Greater Cusco)
Late Horizon (Inca Imperial) · Inca (Quechua)
High-altitude (3,400 m) radial sacred geography of the Inca capital: 41 ceque lines radiating from Coricancha/Qorikancha to huaca shrines bounding Sacsayhuamán pampa and Chinchaysuyo suyu.
🇪🇬 Egypt · Pyramid
Southern South Saqqara Pyramid (Shetayet? Complex)
Late Middle Kingdom (13th Dynasty) · Ancient Egyptian
Unfinished Southern South Saqqara pyramid 100 m south of Khendjer — late 13th-Dynasty 52–60 m mudbrick trench c.1730 BCE, abandoned without burial chamber.
🇪🇸 Spain · Rock art
Siega Verde Rock Engravings – Águeda River
Upper Palaeolithic (Solutrean–Magdalenian) · Solutrean–Magdalenian hunter-gatherers of western Iberia
443 Palaeolithic figures on Águeda schist—UNESCO trans-frontier extension of Côa Valley (20–10k BCE).
🇨🇳 China · Rock art
Zuojiang Huashan North Ningming Rock Art
Warring States to Western Han · Luoyue / Zhuang ancestors
North Mingjiang tributary cliffs with 210 frog-men and scaffold postholes.
🇪🇸 Spain · Megalith
Dolmen de Viera
Neolithic – Early Copper Age (c.3850–3000 BCE) · Antequera Chalcolithic / Alcoreños
Antequera World Heritage (70 m from Menga) — 21 m corridor dolmen with 27 orthostats and equinox orientation.
🇴🇲 Oman · Hydraulic works
Buraimi Aflaj System (Oman-UAE Border Oasis)
Iron Age to Modern (Hafit to Islamic) · Hajar oasis (Magan to Islamic)
Cross-border aflaj network (320 m, 24°15′N 55°45′E Buraimi) extending the UNESCO Aflaj Irrigation Systems of Oman (1207, 2006) from Nizwa-Sharqiyah to the Hajar-Buraimi piedmont.
🇨🇳 China · Temple complex
Beishan Grottoes Dazu
Tang to Southern Song · Late Tang to Song Sichuan Buddhist (Wei Junjing to Zhao Zhifeng line)
UNESCO Beishan's 290-niche scholar's cliff 2 km north of Dazu with Song filial piety reliefs.
🇷🇺 Russia · Kurgan
Ak-Alakha Plateau Frozen Kurgans (Ukok Extension)
Early Iron Age (Pazyryk) · Pazyryk (Siberian Ice Maiden horizon)
Southern flank of Ukok Plateau World Heritage 768 (2,200 m, 49°21′N 87°30′E) Ak-Alakha River valley palsa permafrost where Molodin 1993 Princess of Ukok site (Ak-Alakha-3) and 6 new kurgans form…
🇮🇷 Iran · Hydraulic works
Shushtar Band-e Kaisar — Roman Bridge-Dam Caesar's Dam
Sassanian (Roman capture) · Sassanian Persian, Roman legion engineers
Karun 500-m Roman arch bridge-dam by Valerian's legion 260 CE with Gargar mills, core of UNESCO Shushtar system.
🇹🇳 Tunisia · Ancient city
Dougga (Thugga)
Numidian to Byzantine (6th c BCE–6th c CE; peak 2nd–3rd c CE) · Numidian / Carthaginian / Roman / Byzantine
Hilltop Numidian–Roman city covering 70 ha, Dougga is Tunisia's best-preserved Roman town with Capitol, theatre, Ataban mausoleum and Punic sanctuary.