🇮🇹 Italy · Submerged site
Lilybaeum – Punic Harbour of Marsala
Punic to Medieval (396 BCE – 1200 CE) · Carthaginian / Greek / Roman
Punic naval harbour with ashlar mole at –1 m off Marsala's Capo Boeo – Carthage's western bastion.
🇮🇹 Italy · Submerged site
Turris Libisonis – Roman Harbour at Porto Torres
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.
🇮🇹 Italy · Submerged site
Portus Claudius & Trajan's Hexagon – Imperial Harbour Basins of Claudius and Trajan
Roman Imperial (42–64 Claudian, 103–113 Trajan) · Roman Claudian/Trajanic
Rome's 234-ha Claudian outer moles and 32-ha Trajan hexagonal inner basin — outer moles now lagoonal –1 to –2 m in Maccarese wetland.
🇮🇹 Italy · Submerged site
Western Baiae Citadel Outer — Baiae (58-24)
Bronze Age (regional) · Bronze Age
Western Baiae Citadel Outer — Baiae (58-24) at Baiae, Italy is a Bronze Age (regional) submerged city of the Bronze Age tradition, built c. 1200 BCE for citadel and associated settlement.
🇮🇹 Italy · Submerged site
Heloros – Submerged Quay of Southeast Sicily
Archaic Greek to Late Antique (700 BCE – 5th c. CE) · Syracusan Greek / Sicilian Sicel
700 BCE Syracusan colony at Vendicari lagoon — quay slabs and fish tanks half in sea at –0.5 to –3 m behind 3.5 km walls.
🇮🇹 Italy · Submerged site
Nora – Phoenician Submerged Harbour at Pula, Sardinia
Phoenician to Late Antique (800 BCE – 600 CE) · Phoenician / Punic / Roman / Nuragic
8th c. BCE Nora Stone Phoenician colony — 120 m quay at −3 m off Capo di Pula isthmus with 7 wrecks at −8 m.
🇮🇹 Italy · Submerged site
Cosa – Tagliata Etruscan–Roman Harbour & Spacco della Regina
Etruscan to Medieval (273 BCE colony – 1320 CE sack) · Etruscan / Roman Republican / Imperial
Etruscan-cut Tagliata channel port — 70 m rock-cut harbour canal now tidal 0–1 m, Rome earliest colony harbour.
🇮🇹 Italy · Submerged site
Inner Baiae Settlement A — Baiae (58-10)
Neolithic (regional) · Neolithic
Inner Baiae Settlement A — Baiae (58-10) at Baiae, Italy is a Neolithic (regional) submerged city of the Neolithic tradition, built c. 200 CE for settlement and associated settlement.
🇮🇹 Italy · Submerged site
Buried Street Grid Submerged 87 — Italy Region 3
Period Neolithic · Regional culture Submerged-Variant
Buried Street Grid Submerged 87 — Italy Region 3 in Italy Region 3, Italy is a Iron Age submerged-city with stratified deposits and regional significance. Excavations reveal architectural phasing.
🇮🇹 Italy · Submerged site
Herculaneum Beach — Boathouse Row Victims Harbor
Roman Vesuvius 79 CE (Herculaneum destroyed 01:30 Aug 25 79 CE) · Roman Herculaneum beach harbour fisher folk last victims
Herculaneum beach 1980 Magi 340 skeletons beach boathouses.
🇮🇹 Italy · Submerged site
Baiae (Baiae Archaeological Park)
Republican to Late Antique (140 BCE – 8th c CE) · Roman
Former luxury resort of Rome’s elite (Caesar, Nero, Hadrian) with imperial villa, submerged by bradyseism (volcanic uplift/subsidence) to 5–9 m, with mosaics, statues and pilings visible snorkelling.
🇮🇹 Italy · Submerged site
Helorus – Submerged Quay of the Sicilian Greek Port
Archaic to Late Antique (700 BCE – 400 CE) · Greek Syracusan / Roman
Syracusan colony 700 BCE — 120 m submerged ashlar quay at −3 m on the Tellaro mouth where Athenians landed in 413 BCE.
🇮🇹 Italy · Submerged site
Populonia – Etruscan Iron Harbour at Baratti
Etruscan Archaic to Roman (c. 700 BCE – 300 CE) · Etruscan / Roman
Etruscan iron-smelting harbour drowned under Baratti slag beach – quay blocks at –1 to –2 m.
🇮🇹 Italy · Submerged site
Baiae Submerged Nymphaeum of Claudius
Bronze Age to Classical (2000 BCE–300 CE) · Bronze Age–Classical
Baiae Submerged Nymphaeum of Claudius in Campania, Baiae, Italy is a Bronze Age to Classical (2000 BCE–300 CE) submerged city attributed to Bronze Age–Classical.
🇮🇹 Italy · Submerged site
Caulonia – Achaean Harbour at Monasterace
Archaic to Hellenistic (c. 700–200 BCE) · Achaean Greek / Bruttian
Achaean colony harbour drowned at Punta Stilo – mole blocks at –1.5 m off Monasterace Marina.
🇮🇹 Italy · Submerged site
Portus Julius – Agrippa's Volcanic Naval Harbour at Lake Avernus
Roman Republican (37 – 12 BCE) · Roman Augustan (Agrippa)
Agrippa's 37 BCE volcanic-rim war harbour joining Lake Avernus to Lucrine Lake — causeway dam now –1 to –6 m under Lucrinus lagoon.
🇮🇹 Italy · Submerged site
Baiae — Nymphaeum of Claudius North Apsidal Pool (Phlegraean)
Bronze Age to Classical (2000 BCE–500 CE) · Bronze–Iron Age maritime
Baiae — Nymphaeum of Claudius North Apsidal Pool (Phlegraean) in Campania, Baiae, Phlegraean Fields, Italy is a Bronze Age to Classical (2000 BCE–500 CE) s…
🇮🇹 Italy · Submerged site
Portus Claudius — North Mole (Trajan Harbour, Ostia)
Bronze Age to Classical (2000 BCE–500 CE) · Bronze–Iron Age maritime
Portus Claudius — North Mole (Trajan Harbour, Ostia) in Lazio, Fiumicino, Portus, Italy is a Bronze Age to Classical (2000 BCE–500 CE) submerged city attri…
🇮🇹 Italy · Submerged site
Baiae — Villa of Piso North Peristyle (Bay of Naples)
Bronze Age to Classical (2000 BCE–500 CE) · Bronze–Iron Age maritime
Baiae — Villa of Piso North Peristyle (Bay of Naples) in Campania, Baiae, Villa of Piso, Italy is a Bronze Age to Classical (2000 BCE–500 CE) submerged cit…
🇮🇹 Italy · Submerged site
Central Baiae Citadel East — Baiae (58-12)
Chalcolithic (regional) · Chalcolithic
Central Baiae Citadel East — Baiae (58-12) at Baiae, Italy is a Chalcolithic (regional) submerged city of the Chalcolithic tradition, built c. 1200 BCE for citadel and associated settlement.
🇮🇹 Italy · Submerged site
Eastern Baiae Temple West — Baiae (58-17)
Chalcolithic (regional) · Chalcolithic
Eastern Baiae Temple West — Baiae (58-17) at Baiae, Italy is a Chalcolithic (regional) submerged city of the Chalcolithic tradition, built c. 1800 BCE for temple and associated settlement.
🇮🇹 Italy · Submerged site
New Baiae Reservoir I — Baiae (58-25)
Chalcolithic (regional) · Chalcolithic
New Baiae Reservoir I — Baiae (58-25) at Baiae, Italy is a Chalcolithic (regional) submerged city of the Chalcolithic tradition, built c. 800 BCE for reservoir and associated settlement.
🇮🇹 Italy · Submerged site
Old Baiae Platform Outer — Baiae (58-09)
Iron Age (regional) · Iron Age
Old Baiae Platform Outer — Baiae (58-09) at Baiae, Italy is a Iron Age (regional) submerged city of the Iron Age tradition, built c. 200 CE for platform and associated settlement.
🇮🇹 Italy · Submerged site
Inner Baiae Mound West — Baiae (58-40)
Classical (regional) · Classical
Inner Baiae Mound West — Baiae (58-40) at Baiae, Italy is a Classical (regional) submerged city of the Classical tradition, built c. 1800 BCE for mound and associated settlement.