🇬🇧 United Kingdom · Megalith
Knockmany Passage Tomb (Annia's Cove)
Late Neolithic · Boyne / Loughcrew tradition (western outlier)
Hilltop 15 m passage tomb with three decorated stones (spirals/lozenges) — westernmost Boyne-style tomb in Ulster.
🇫🇷 France · Megalith
Locmariaquer Megaliths
Middle Neolithic (~4700–4000 BCE) · Carnac Neolithic (Castellic)
Three interlinked monuments on the Gulf of Morbihan: the shattered 20.6-m Grand Menhir Brisé – heaviest moved stone in Europe at 280 tonnes before earthquake toppling; the Table des Marchand passage…
🇮🇪 Ireland · Earthwork
Hill of Tara
Neolithic to Early Medieval (c.3400 BCE–1200 CE) · Neolithic → Iron Age La Tène → Early Medieval Gaelic
Ireland's paramount ceremonial landscape (142 ha) — Neolithic tomb, Lia Fáil kingship stone and Iron Age royal enclosure complex.
🇮🇪 Ireland · Megalith
Dowth
Neolithic · Boyne Valley Neolithic
Westernmost of three great Brú na Bóinne tombs, 85 m diameter, two passages and souterrain. Less restored, preserving original form. Associated winter sunset alignment.
🇬🇧 United Kingdom · Megalith
Slieve Gullion Passage Tombs
Middle Neolithic to Bronze Age · Irish Passage Tomb / Bronze Age
Summit and north passage tombs on Slieve Gullion (573 m), south cairn cruciform, Bronze Age kerb reuse, c.3500 BCE.