🇺🇦 Ukraine · Ancient city
Bilsk Hillfort – Gelonus
Early Iron Age, Scythian period · Scythian-agrarian (Budini, possibly Geloni Greeks per Herodotus)
4,400-ha 7th-c. BCE Scythian mega-hillfort—largest in Europe, Herodotus's wooden Gelonus candidate.
🇨🇿 Czech Republic · Hillfort
Stará Kouřim Hillfort
Early Medieval (9th–early 12th century) · Zličan / Přemyslid
Prominent Zličan tribal hillfort at Stará Kouřim (44 ha plateau with double ramparts, gate complex) above Kouřim valley 50 km east Prague, mentioned in Dalimil Chronicle.
🇸🇪 Sweden · Hillfort
Grogarnsberget Hillfort
Iron Age (400 BCE–500 CE) · Gotlandic Iron Age
Massive coastal hillfort on Grogarnsberget limestone plateau (65 m) above Katthammarsvik, with 1200 m stone wall 4 m high enclosing 45 ha, double walls at north.
🇳🇬 Nigeria · Ancient village
Surame Outlier Hillforts
Kebbi Empire (15th–18th c.) · Kebbi / Zamfarawa
Chain of 4 hilltop outlier forts with 1.5 km walls each protecting Surame fields.