🇲🇹 Malta · Megalith
Mnajdra
Chalcolithic · Maltese Temple culture
Clifftop complex of three conjoined temples 500 m below Ħaġar Qim; best preserved in Malta with corbelled walls, precise equinox/solstice solar alignments through doorways.
🇮🇪 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
Maeshowe Chambered Cairn
Late Neolithic · Grooved Ware Orcadian
Finest Orkney chambered cairn: 36 m mound, long passage, corbelled chamber. Midwinter sunset illuminates chamber. Bears 12th-century Viking runic inscriptions (>30).
🇬🇧 United Kingdom · Megalith
Ring of Brodgar
Late Neolithic · Grooved Ware Orcadian
Massive henge and stone circle 104 m diameter, originally 60 stones (36 surviving). Enclosed by rock-cut ditch up to 10 m wide. Core of Heart of Neolithic Orkney.
🇬🇧 United Kingdom · Megalith
Standing Stones of Stenness
Late Neolithic · Grooved Ware Orcadian
Four surviving uprights of oval henge circle originally 12 stones up to 5.7 m tall on promontory between lochs. One of earliest henges in Britain (c.3100 BCE).
🇵🇪 Peru · Ancient city
Gran Pajatén Archaeological Zone
Chachapoya 800–1532 CE · Chachapoya
Chachapoya cloud-forest citadel slate-mosaic friezes, UNESCO 548.
🇺🇸 United States · Earthwork
High Bank Works
Hopewell Middle Woodland 100–400 CE · Hopewell tradition
Circle-octagon pair 320 m circle, UNESCO 2023.
🇲🇽 Mexico · Ancient city
Yagul Archaeological Zone
Zapotec Postclassic 1250–1521 CE · Zapotec (Tlacolula valley)
Zapotec hill-fortress Palace Six Patios 1250–1400 CE, UNESCO 2010.
🇲🇽 Mexico · Ancient city
Xochicalco Archaeological Zone
Epiclassic 650–900 CE · Epiclassic central Mexican
Fortified hilltop Pyramid of Plumed Serpents, zenith cave, UNESCO 1999.
🇲🇽 Mexico · Ancient city
Kabah Archaeological Zone
Maya Late Classic 300–1000 CE · Maya (Puuc, Uxmal polity)
Palace of Masks 250 Chaac masks, 18 km sacbé 800–950 CE, UNESCO 1996.
🇨🇱 Chile · Megalith
Rano Raraku Quarry detail
900–1500 CE · Rapa Nui
Cross-ref quarry within Rapa Nui National Park main entry; tuff quarry with 400 moai in situ including El Gigante (~21 m).
🇲🇽 Mexico · Ancient city
Labná Archaeological Zone
Maya Late Classic 700–1000 CE · Maya (Puuc)
Labná Arch 3 m, 67-room Palace, Puuc 800–1000 CE.