🇱🇻 Latvia · Hillfort
Tērvete Hillfort
Iron Age to 1286 CE (Semigallian) · Semigallian
Zemgale's greatest Semigallian hillfort complex at Tērvete — three hillforts (Wooden Castle Hill 35 m, Swede Hill, Kloster Hill) plus 1000+ barrow cemetery.
🇨🇿 Czech Republic · Hillfort
Libice nad Cidlinou Slavník Stronghold
Early Medieval (9th–995 CE) · Slavník / Přemyslid Bohemia
Great Slavník hillfort capital at Libice (Libice nad Cidlinou) on Elbe–Cidlina confluence (25 ha inner 10 ha) with triple ramparts (7 m high, 40 m base), stone church and palace hall.
🇺🇦 Ukraine · Hillfort
Motronyn Hillfort
Scythian (7th–4th century BCE, peak 500 BCE) · Scythian Forest-Steppe
Massive Scythian hillfort (205 ha) deep in Kholodnyi Yar oak forest near Chyhyryn, with massive earthen ramparts 8 m high enclosing sacred settlement and cemetery. Excavated by M.
🇩🇰 Denmark · Hillfort
Nonnebakken Viking Ringfort (Odense)
Viking Age (c.980 CE) · Danish Viking Age
Viking ringfort beneath Odense's former castle at Nonnebakken (Nuns' Hill), 120 m diameter with 13 m wide turf rampart, discovered by C14 and magnetometry under Odinstårnet lot.
🇨🇿 Czech Republic · Hillfort
Levý Hradec Přemyslid Stronghold
Early Medieval (c.882–955) · Přemyslid Bohemia (Great Moravian echo)
Earliest Přemyslid stronghold (Levý Hradec) on Vltava promontory at Roztoky 10 km north of Prague — circular rampart 100×80 m, wooden hall and the 884 St.
🇨🇿 Czech Republic · Ancient city
Uherské Hradiště–Sady Great Moravian Centre
Great Moravian (9th–early 10th century) · Great Moravian Slavic
Great Moravian church and settlement complex on Sady hill (210 m) above Morava — cruciform church with narthex (c.830), cemetery 86 graves with gold earrings, and adjoining settlement.
🇨🇿 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.
🇸🇰 Slovakia · Hillfort
Ducové–Kostolec Great Moravian Hillfort
Great Moravian (9th century, 830–907) · Great Moravian Slavic
Great Moravian hillfort on Kostolec hill (290 m) above Váh valley at Ducové, with double ramparts (6 m) enclosing 1.8 ha, stone rotunda church (discovered 1968) and magnate hall. Slovak-T.
🇩🇰 Denmark · Hillfort
Aggersborg Viking Ringfort
Viking Age (c.980 CE) · Danish Viking Age
Largest Viking ring fortress (240 m outer diameter, 287 m with moat) on the Limfjord at Aggersborg, enclosing 48 longhouses (32 inside, 16 bailey) — garrison for ~1100 men.
🇱🇻 Latvia · Hillfort
Jersika Hillfort
Iron Age to 1239 CE (Latgalian principality) · Latgalian / Orthodox Rus'
Latgalian hillfort capital of the Orthodox principality of Jersika (Gercike) at Daugava's Tsargrad bend, a 75×100 m plateau 32 m above river with 12 m rampart, church foundations and 13th-c…
🇺🇦 Ukraine · Hillfort
Khotiv Hillfort
Scythian (6th–4th century BCE) · Scythian / Early Slavic (reuse)
Well-preserved Scythian promontory hillfort at Khotiv on Kyiv's southern edge (Vita valley), 48 ha with 3 ramparts and ditches enclosing a plateau with Scythian houses and later Zarubintsy reuse.
🇱🇻 Latvia · Hillfort
Daugmale Hillfort
Late Iron Age to Medieval (900–1200 CE) · Livonian / Latgalian
Important Daugava port and hillfort at Daugmale (Daugava island) 12 km SE of Riga, with 3 ha hillfort (rampart 8 m high) plus 1st millennium trading place yielding 37,000 finds: Scandinavian…
🇩🇰 Denmark · Hillfort
Fyrkat Viking Ringfort
Viking Age (c.980 CE) · Danish Viking Age
Viking ringfort 120 m diameter near Hobro, North Jutland, contemporary with Trelleborg (Harald Bluetooth), with identical four-gate geometry and 16 houses plus a cemetery of 30 graves including wagon…
🇸🇰 Slovakia · Hillfort
Zemplín Celtic Oppidum
Celtic Late La Tène (2nd century BCE–1st century BCE) · Celtic (Eastern La Tène)
Eastern Celtic oppidum at Zemplín on a low hill above the Bodrog at the Slovak-Hungarian border, with earth-timber ramparts enclosing 12 ha, excavated by B. Benadik.
🇳🇬 Nigeria · Fortified city
Kagara (Niger State) – Hill Fort Terraces
Niger–Benue hillfort tradition (c. 1300–1900 CE; peak 16th–18th c) · Gbagyi / Hausa (Kamberi hill peoples) / Fulani pressures
Inselberg hill fort above Kagara plain with laterite terraces 2 m high, boulder walls (2.1 km) and narrow cleft gates, iron smelting terraces and shrines of Gunnu hill peoples flee...