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🇪🇬 Egypt · Submerged site
Hellenistic to Late Antique (274 BCE – 250 CE) · Ptolemaic / Roman
Central basin of Myos Hormos at Quseir al-Qadim — 90 m coral quay at –1.2 m and 120 m silted lagoon.
🇫🇷 France · Hydraulic works
Roman Imperial (Hadrian to Severan, 2nd–3rd c CE) · Roman Gallo-Roman (Arelate)
Hadrianic 16-wheel industrial mills (early 2nd c CE) on 9 km aqueducts — Roman factory producing 4.5 t flour/day for Arles.
🇪🇬 Egypt · Submerged site
Roman to Early Islamic (1 CE – 800 CE) · Roman / Byzantine / Early Islamic
Southern roadstead of Quseir al-Qadim — 65 m coral breakwater at –3 m and mangrove quay.
🇩🇪 Germany · Hydraulic works
Roman Imperial (Flavian to Late Roman, 1st–3rd c CE) · Roman Gallo–German (Colonia Agrippina)
95-km Flavian Roman concrete aqueduct (c.80 CE) delivering 20,000 m³/day from Eifel springs to Cologne.
🇪🇸 Spain · Hydraulic works
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 · Submerged site
Ptolemaic to Late Roman (275 BCE – 250 CE) · Ptolemaic / Roman Egyptian
Northern mangrove roadstead of Myos Hormos at Marsa Nakari — timber jetty stumps at –1.5 m behind mangroves.
🇪🇬 Egypt · Submerged site
Ptolemaic to Late Roman (275 BCE – 250 CE) · Ptolemaic / Roman Egyptian
Northern mangrove roadstead of Myos Hormos at Marsa Nakari — timber jetty stumps at –1.5 m behind mangroves.
🇪🇬 Egypt · Submerged site
Ptolemaic to Late Roman (275 BCE – 550 CE) · Ptolemaic / Roman Egyptian
Southern Foul Bay lagoon of Berenike behind Ras Benas — gypsum quay at –1.5 m and elephant ramp.
🇪🇬 Egypt · Submerged site
Ptolemaic to Late Roman (275 BCE – 550 CE) · Ptolemaic / Roman Egyptian
Southern Foul Bay lagoon of Berenike behind Ras Benas — gypsum quay at –1.5 m and elephant ramp.
🇮🇷 Iran · Hydraulic works
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.
🇹🇷 Turkey · Submerged site
Hellenistic to Byzantine (300 BCE – 600 CE) · Seleucid / Roman / Byzantine
Antioch's silted harbour basin 600×400 m now meadow at Çevlik with 1.4 km Roman flood tunnel.
🇹🇳 Tunisia · Submerged site
Numidian to Genoese (c. 400 BCE – 1542 CE) · Numidian / Carthaginian / Roman / Genoese
Numidian marble-shipping double harbour – causeway at –0.5 m and Roman quay at –1 m off Tabarka island.
🇹🇳 Tunisia · Ancient city
Punic to Late Antiquity (4th c BCE–7th c CE; peak 2nd–3rd c CE) · Punic-Numidian / Roman / Byzantine
15-ha Punic–Numidian to Roman colonia on Carthage–Theveste road with three arches and Byzantine fortress.
🇮🇷 Iran · Hydraulic works
Sassanid Early (Shapur I, 241–270 CE) built by Roman captives · Sassanid Persian with Roman engineering corps (Legio)
500-m Roman-Sassanid arch bridge/dam (260 CE) raising Karun for Shushtar's 10-km Gargar canal — easternmost Roman dam.
🇮🇹 Italy · Submerged site
Late Republican to Medieval (46 BCE – 1200 CE) · Roman / Vandal / Byzantine
Caesar's Sardinian colony harbour – 200 m pozzolana eastern mole at –1 to –2.5 m under Porto Torres.
🇮🇳 India · Submerged site
Iron Age to Medieval (c. 1000 BCE – 1341 CE) · Chera / Indo-Roman
Roman pepper port brick wharf 100 m under 3 m silt at Pattanam – 8 m canoe at 4 km inland.
🇸🇾 Syria · Hydraulic works
Roman Hadrianic to Byzantine Justinian · Roman–Byzantine coastal Levant
Nahr al-Kabir: 3.2-km Roman 2nd-c. canalized river reach on Syria 35.30N coastal plain, Latakia.
🇹🇷 Turkey · Submerged site
Ionian to Byzantine (10th c. BCE – 600 CE) · Ionian Greek / Lydian / Roman
Silted imperial harbour 600×300 m now 5 km inland – quay walls buried 4 m, Selçuk.
🇮🇳 India · Ancient city
Maurya 300–187 BCE → Satavahana 187 BCE–230 CE → Vakataka 250–400 CE · Satavahana (Periplus Tagara)
Periplus Tagara emporium (300 BCE–400 CE) on Terna — 50+ Roman amphorae and Ter ivory lady with Roman hair, 40 ha rampart.
🇪🇬 Egypt · Submerged site
Ptolemaic to Islamic (280 BCE – 1400 CE) · Ptolemaic / Roman / Ayyubid
Quseir/Myos Hormos southern twin basin — Roman concrete mole and Ayyubid jetty 0.3–1.2 m submerged south of main harbour.
🇫🇷 France · Hydraulic works
Roman Imperial (Augustan-Claudian, mid-1st c. CE) · Roman Gallia Narbonensis (Nemausus)
Augustinian 48.8-m 3-tier bridge 50-km Nîmes aqueduct 35,000 m³/d, 6-tonne dry stone.
🇹🇷 Turkey · Tell
Chalcolithic to Byzantine; Phrygian-Roman sanctuary peak · Phrygian → Galatian Tolistobogii → Roman Galatia
Mother-goddess sanctuary-city of Cybele — Phrygian terraces, Hellenistic temple and Roman acropolis buried under Ballıhisar mound on Sangarios.
🇹🇷 Turkey · Ancient city
Hellenistic to Early Byzantine (classical antiquity to c.640 CE earthquake) · Pisidian → Hellenistic → Roman Imperial → Byzantine
Pisidian highland Roman city at 1,600 m with restored Antonine Nymphaeum and cliff theatre.
🇪🇬 Egypt · Archaeological wonder
Roman Imperial (18 CE–4th c. CE; peak Hadrianic 130–200 CE) · Roman
Mons Porphyrites (Jabal Abu Duhhan) is the world's only imperial porphyry source, 950 m Red Sea mountain, producing purple leucocratic andesine porphyry monolithic columns and sarcophagus of…
