🇵🇱 Poland · Fortified settlement
Wiślica Early Medieval Stronghold
Great Moravian to Piast (9th–12th century) · Vistulan / Piast Poland
Vistulan tribal hillfort and Piast stronghold at Wiślica on Nida (4 ha) with massive 9th c baptismal basin (4.5 m oval plastered tub debated as Great Moravian Methodius mission 880) under later…