🇮🇪 Ireland · Megalith
Knockroe Passage Tomb
Neolithic (c.3200–2800 BCE) · Boyne Valley Passage Tomb tradition
Kilkenny dual-passage tomb with lavish megalithic art, aligned to both midwinter sunrise and sunset.
🇫🇷 France · Megalith
Alignements de Lagatjar
Late Neolithic · Western Brittany Neolithic (Océan Atlantic Megalithic)
Crozon's triple stone rows — 72 menhirs (to 2.1 m) in three 200 m parallel alignments near Camaret.
🇺🇸 United States · Earthwork
Rock Hawk Effigy Mound
Woodland–Archaic 1000 BCE–1000 CE · Woodland peoples
30-m quartz hawk effigy on Oconee River, paired with Rock Eagle.