🇬🇧 United Kingdom · Megalith
The Sanctuary (Overton Hill)
Late Neolithic – Early Bronze Age · Windmill Hill / Wessex Neolithic
Timber-then-stone double circles (40 m outer) at SE end of West Kennet Avenue — Avebury's mortuary terminus.
🇬🇧 United Kingdom · Megalith
Bryn Celli Ddu
Late Neolithic to Early Bronze Age · Irish Sea Passage Tomb tradition
Anglesey passage tomb with 8.4 m passage aligned to midsummer sunrise and decorated spiral stone.
🇬🇧 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).